Ingredients Glossary

Everything you need to know about what goes on your skin, and why it matters.

At The Functional Skin, we believe that understanding what is in your products is just as important as using them consistently. This glossary exists to bridge the gap between the label and your skin, giving you clear, evidence-informed explanations of the ingredients we choose and why they earn a place in our formulations.

Whether you are trying to decode an ingredient list, understand how a particular active works, or find the right products for your skin concern, this is your starting point. Each ingredient page includes a plain-language definition, key skin benefits, how to use it, which products contain it  and answers to the most commonly asked questions.

We are not here to overwhelm you with science. We are here to help you make informed decisions about what you put on your skin, every single day.

AVOCADO OIL

Avocado oil is a nourishing plant oil derived from the flesh of the avocado fruit. It is rich in essential fatty acids, vitamins, and antioxidants that help support skin barrier function and deliver deep hydration.

Key Skin Benefits

  • Provides deep nourishment and softness to dry and compromised skin.
  • Supports barrier repair with essential fatty acids, including oleic acid.
  • Helps protect the skin against environmental stressors with antioxidant content.
  • Absorbs readily into the skin without leaving a heavy residue.

Best For

How to Use Avocado oil is best used as part of a PM routine where it can support overnight barrier repair and nourishment. In The Grace Face Oil, it works alongside other non-occlusive oils to cleanse and nourish without blocking pores.

Layering Advice Apply products containing avocado oil after your serum and before or instead of a heavier moisturiser in the evening. When used in an oil cleanser, apply to dry skin before cleansing.

Cautions Avocado oil is generally well tolerated across all skin types. If you have a known sensitivity to avocado, patch test before use.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose cleansing and nourishing oil formulated with avocado oil alongside hemp seed, camellia, rosehip, and squalane.

Related Learning Resources Read Won’t Oil Break Me Out? The Truth About Using Oil On Your Skin blog.

FAQs

Is avocado oil suitable for oily or breakout-prone skin? Yes. Avocado oil is used in non-occlusive formulations that will not block pores. In The Grace Face Oil, it is combined with other lightweight oils to cleanse and nourish without congesting the skin.

Will avocado oil make my skin feel greasy? No. When formulated correctly in a non-occlusive blend, avocado oil absorbs without leaving a heavy or greasy finish.

Can I use avocado oil every day? Yes. It is suitable for daily use as part of a cleansing or nourishing routine.

Is avocado oil good for mature skin? Yes. Its essential fatty acid content makes it particularly supportive for mature skin that benefits from additional nourishment and barrier support.

Is avocado oil natural? Yes. Avocado oil is a naturally derived plant oil used in The Functional Skin's formulations as part of a low-tox, health-conscious approach to skincare.

BEARBERRY

Definition Bearberry, also known as Uva Ursi, is a plant extract derived from the leaves of the Arctostaphylos uva-ursi plant. It is naturally rich in arbutin, a compound known for its brightening properties and ability to support a more even-looking complexion.

Key Skin Benefits

  • Supports a brighter, more even-looking complexion.
  • Helps defend against oxidative stress with antioxidant properties.
  • Contributes to balanced melanin production when combined with other brightening actives.
  • Supports overall skin radiance and clarity.

Best For

How to Use Bearberry is most effective when used consistently as part of a daily serum routine. Apply after cleansing and before moisturising, morning and night, for best results.

Layering Advice Apply your Bearberry-containing serum to clean, dry skin. Follow with a moisturiser to seal in hydration and support the skin barrier.

Cautions Bearberry is generally well tolerated. As with any brightening ingredient, consistent daily SPF use is important to protect against UV-triggered pigmentation.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Bearberry alongside Kakadu Plum, Hyaluronic Acid, and Pentavitin to support radiance, hydration, and antioxidant protection.

Related Learning Resources Read Won’t Oil Break Me Out? The Truth About Using Oil On Your Skin Blog.

FAQs

What does bearberry do for the skin? Bearberry is rich in arbutin and antioxidants that help support a more even-looking complexion and defend against oxidative stress, making it a valued ingredient in brightening skincare routines.

Is bearberry safe for daily use? Yes. Bearberry is gentle enough for daily use and is well tolerated across most skin types when used as part of a serum formulation.

Can bearberry help with pigmentation? Bearberry supports a more even-looking complexion and is often used alongside other brightening botanicals for this purpose. It is not a treatment for pigmentation but supports the appearance of more even skin tone over time.

Does bearberry work better with other ingredients? Yes. Bearberry works synergistically with other antioxidant and brightening ingredients. In The Sunny Serum, it is combined with Kakadu Plum, Tasmanian Pepperberry, and Green Tea Oil for comprehensive antioxidant and brightening support.

Do I still need SPF if I use bearberry? Yes. SPF is essential in any brightening routine. UV exposure is a primary trigger for uneven skin tone and daily broad spectrum sun protection is non-negotiable for best results.

BETA GLUCAN

Definition Beta Glucan is a naturally derived polysaccharide found in oats, mushrooms, and other plant sources. It is known for its exceptional ability to soothe, hydrate, and support the skin barrier, making it a valuable ingredient for sensitive and reactive skin.

Key Skin Benefits

  • Provides deep soothing hydration that helps calm visible redness and irritation.
  • Supports the skin barrier and helps improve skin resilience over time.
  • Acts as a humectant, drawing moisture into the skin for lasting comfort.
  • Helps support a calmer, more comfortable complexion over time.

Best For

How to Use Beta Glucan is most effective when used daily as part of a moisturising step. Apply after your serum, morning and evening, for consistent barrier support and hydration.

Layering Advice Apply products containing Beta Glucan after your serum and allow to absorb fully before applying SPF in the morning. It layers well under and over other hydrating ingredients.

Cautions Beta Glucan is extremely well tolerated and is considered one of the gentlest hydrating and soothing ingredients available. It is suitable for all skin types including reactive and compromised skin.

Products That Contain This Ingredient The Charlotte Calming Cream — a rich calming cream for sensitive skin formulated with Beta Glucan alongside Oat Kernel Oil, Mango Seed Butter, Niacinamide, and Lactobacillus Ferment.

Related Learning Resources Read our blog on The Charlotte Calming Cream

FAQs

What is Beta Glucan and where does it come from? Beta Glucan is a naturally derived polysaccharide most commonly sourced from oats or mushrooms. It is used in skincare for its exceptional soothing and hydrating properties.

Is Beta Glucan suitable for sensitive skin? Yes. Beta Glucan is one of the most gentle and well-tolerated ingredients in skincare and is particularly beneficial for sensitive, reactive, and compromised skin.

How does Beta Glucan differ from Hyaluronic Acid? Both are humectants that draw moisture into the skin, but Beta Glucan also has notable soothing and barrier-supporting properties that make it particularly beneficial for reactive and sensitive skin types.

Can Beta Glucan be used every day? Yes. It is safe and beneficial for daily use, morning and evening, as part of a moisturising routine.

Does Beta Glucan help with redness? Yes. Beta Glucan helps soothe visible redness and calm reactive skin, making it a key ingredient in The Charlotte Calming Cream.

CALENDULA FLOWER EXTRACT

Definition Calendula Flower Extract is derived from the flowers of Calendula officinalis, a plant with a long history of use in skin wellness. It is widely regarded for its calming and soothing properties, making it a trusted ingredient for sensitive and reactive skin.

Key Skin Benefits

  • Helps calm and soothe irritated or reactive skin.
  • Supports comfort during and after cleansing.
  • Contributes to a balanced, settled complexion.
  • Gentle enough for all skin types including sensitive and breakout-prone skin.

Best For

How to Use Calendula is found in both cleansing and serum formulations at The Functional Skin. Use morning and evening consistently as part of your routine for best results.

Layering Advice When present in a cleanser, Calendula works during the cleansing step. When present in a serum, apply after cleansing and before moisturising.

Cautions: Calendula is generally very well tolerated. Those with a known allergy to plants in the Asteraceae family, such as ragweed or chrysanthemums, should patch test before use.

Products That Contain This Ingredient The Lily Cleanser — a gentle daily cleanser formulated with Calendula alongside Lilly Pilly, Gluconolactone, and Sage to cleanse without stripping. The Sophia Serum — a daily balancing serum formulated with Calendula alongside Niacinamide, Liquorice Root, and Gluconolactone to calm and clarify.

Related Learning Resources Read more about our Inflamed/Sensitive collection.

FAQs

What is Calendula used for in skincare? Calendula is used for its calming and soothing properties. It helps comfort reactive and sensitive skin, making it a well-suited ingredient in both cleansers and serums.

Is Calendula safe for daily use? Yes. Calendula is gentle and well tolerated, making it suitable for daily use in both AM and PM routines.

Can people with sensitive skin use Calendula? Yes. Calendula is particularly beneficial for sensitive skin. It is one of the gentlest botanical extracts used in skincare.

Does Calendula help with breakouts? Calendula supports a calmer, more settled complexion and is used in The Sophia Serum alongside Niacinamide and other clarifying ingredients to support clearer-looking skin.

Is Calendula a natural ingredient? Yes. Calendula Flower Extract is a naturally derived botanical ingredient used across The Functional Skin range as part of a low-tox, health-conscious approach to formulation.

CAMELLIA SEED OIL

Definition Camellia Seed Oil, derived from the seeds of the Camellia japonica or Camellia oleifera plant, is a lightweight yet deeply nourishing oil rich in oleic acid and antioxidants. It has a long history of use in Asian skincare traditions for its ability to soften and protect the skin.

Key Skin Benefits

  • Locks in moisture and softens the skin without heaviness.
  • Supports the skin barrier with essential fatty acids.
  • Provides antioxidant protection against environmental stressors.
  • Absorbs readily without leaving a greasy finish.

Best For

How to Use Camellia Seed Oil is used in The Grace Face Oil as both a cleansing and nourishing ingredient. It can be used as a first cleanse in the evening or as a finishing oil applied over your moisturiser before bed.

Layering Advice When used as a cleansing oil, apply to dry skin before cleansing. When used as a nourishing treatment, apply as the final step in your PM routine after moisturiser.

Cautions Camellia Seed Oil is well tolerated across all skin types. It is non-occlusive and will not block pores when used in appropriate formulations.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose face oil formulated with Camellia Seed Oil alongside Hemp Seed, Rosehip, Avocado, and Squalane.

Related Learning Resources  Read Won’t Oil Break Me Out? The Truth About Using Oil On Your Skin blog.

FAQs

What makes Camellia Seed Oil different from other face oils? Camellia Seed Oil is particularly lightweight and rich in oleic acid, allowing it to absorb quickly and nourish deeply without the heaviness associated with some other plant oils.

Is Camellia Seed Oil suitable for oily skin? Yes. It is a non-occlusive oil that absorbs readily and will not block pores when used in appropriate formulations.

Can I use Camellia Seed Oil every day? Yes. It is suitable for daily use as part of a cleansing or nourishing routine.

Does Camellia Seed Oil help with hydration? Yes. Camellia Seed Oil helps lock in moisture and soften the skin, making it a valuable ingredient for dry and dehydrated skin types.

Is Camellia Seed Oil a natural ingredient? Yes. Camellia Seed Oil is a naturally derived plant oil used in The Functional Skin's formulations as part of a low-tox, cruelty-free approach to skincare.

COFFEE SEED OIL

Definition Coffee Seed Oil is extracted from the seeds of the Coffea arabica plant and is naturally rich in antioxidants, including tocopherols and phytosterols. It is used in skincare for its protective and nourishing properties and gives The Grace Face Oil its subtle, uplifting natural aroma.

Key Skin Benefits

  • Provides antioxidant protection against free radical damage.
  • Nourishes and supports the skin barrier with essential fatty acids.
  • Contributes a subtle, naturally uplifting aroma without synthetic fragrance.
  • Supports overall skin vitality and resilience.

Best For

How to Use Coffee Seed Oil is used in The Grace Face Oil as part of a multi-purpose antioxidant blend. Use as a first cleanse in the evening or as a nourishing finishing oil applied over moisturiser.

Layering Advice Apply as part of The Grace Face Oil either before cleansing on dry skin or as a final PM step pressed over your moisturiser.

Cautions Coffee Seed Oil is generally well tolerated. It is not a stimulant when applied topically and does not contain caffeine in concentrations that would cause skin sensitivity.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose cleansing and nourishing oil formulated with Coffee Seed Oil alongside Hemp Seed, Camellia, Rosehip, and Squalane.

Related Learning Resources Read more about our Pigmentation collection.

FAQs

Does Coffee Seed Oil smell like coffee? Yes, subtly. Coffee Seed Oil gives The Grace Face Oil a mild, naturally uplifting aroma without the use of synthetic fragrance or essential oils.

Is Coffee Seed Oil suitable for sensitive skin? Yes. Coffee Seed Oil is used in a fragrance-free and essential oil-free formulation in The Grace Face Oil, making it suitable for sensitive skin types.

What does Coffee Seed Oil do for the skin? Coffee Seed Oil provides antioxidant protection and nourishment, helping support the skin barrier and defend against environmental stressors.

Is Coffee Seed Oil the same as caffeine in skincare? No. Coffee Seed Oil is a plant oil rich in antioxidants and fatty acids. It is different from isolated caffeine, which is used in some skincare products for targeted purposes such as reducing puffiness.

Is Coffee Seed Oil natural? Yes. Coffee Seed Oil is a naturally derived plant oil and is part of The Functional Skin's commitment to low-tox, synthetic-free formulations.

COLLOIDAL SILVER

Definition Colloidal Silver is a suspension of microscopic silver particles in liquid. In skincare, it is used to help support a balanced skin environment and the skin's natural defence mechanisms, making it a considered addition to formulations designed for compromised and reactive skin.

Key Skin Benefits

  • Helps support a balanced skin environment for compromised or reactive skin.
  • Helps support the skin's natural defence mechanisms.
  • Suitable for skin that is prone to irritation or sensitivity.
  • Works alongside postbiotic ingredients to support a balanced skin environment.

Best For

How to Use Colloidal Silver is used in The Charlotte Calming Cream as part of a comprehensive calming and barrier-support formulation. Apply morning and evening after cleansing and serum application.

Layering Advice Apply The Charlotte Calming Cream as your moisturising step after serum. It does not require any special layering considerations and works well alongside other hydrating and barrier-supporting products.

Cautions Colloidal Silver in The Charlotte Calming Cream is used at a concentration appropriate for topical cosmetic use. It is not intended for internal use. If you have a known sensitivity to silver, patch test before use.

Products That Contain This Ingredient The Charlotte Calming Cream — a rich calming cream formulated with Colloidal Silver alongside Oat Kernel Oil, Mango Seed Butter, Niacinamide, Beta Glucan, and Lactobacillus Ferment.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What is Colloidal Silver used for in skincare? Colloidal Silver is used to help support a balanced skin environment in compromised or reactive skin, working alongside other calming and barrier-supporting ingredients.

Is Colloidal Silver safe for sensitive skin? Yes. When used at appropriate concentrations in a topical formulation, Colloidal Silver is suitable for sensitive and reactive skin. The Charlotte Calming Cream has been tried and tested in clinic and is trusted by thousands of sensitive skin customers.

Does Colloidal Silver disrupt the skin microbiome? When used at cosmetically appropriate concentrations alongside postbiotic ingredients like Lactobacillus Ferment, it is formulated with skin balance and comfort in mind.

Can children use products with Colloidal Silver? The Charlotte Calming Cream is formulated as a skin calming cream for all ages. If you have concerns about use on young or very sensitive skin, we recommend consulting with a skin professional.

Is Colloidal Silver a natural ingredient? Colloidal Silver is a mineral-derived ingredient. It is used in The Charlotte Calming Cream as part of a non-toxic, fragrance-free, and steroid-free formulation.

DERMBIOTICS (PRE AND POSTBIOTICS)

Definition DermaBiotics is a specialised pre and postbiotic complex used in skincare to support the skin's microbiome, the community of beneficial microorganisms that play a key role in maintaining a healthy, resilient skin barrier. By feeding and strengthening beneficial skin flora, DermaBiotics helps the skin maintain balance and function optimally.

Key Skin Benefits

  • Supports a healthy, balanced skin microbiome.
  • Strengthens the skin barrier and supports long-term resilience.
  • Promotes lasting skin comfort and hydration.

Best For

How to Use DermaBiotics is most effective when used consistently as part of a daily moisturising routine. Apply The Isobel Moisturiser morning and evening after cleansing and serum to allow the pre and postbiotics to work with the skin's natural renewal process.

Layering Advice Apply after your serum and before SPF in the morning. In the evening, apply as the final moisturising step to support overnight barrier repair.

Cautions DermaBiotics is well tolerated across all skin types. Pre and postbiotics are considered among the most gentle and beneficial categories of skincare ingredients.

Products That Contain This Ingredient The Isobel Moisturiser — a lightweight barrier repair moisturiser formulated with DermaBiotics alongside Pumpkin Seed Oil, Squalane, Vitamin B5, Lilly Pilly, and Quandong.

Related Learning Resources Read our Postbiotics in your skincare blog now

FAQs

What is the difference between prebiotics, probiotics, and postbiotics in skincare? Prebiotics feed and support beneficial bacteria already on the skin. Probiotics introduce live beneficial microorganisms. Postbiotics are the beneficial byproducts of probiotic activity. DermaBiotics combines pre and postbiotics to support a balanced and resilient skin microbiome from multiple angles.

Is DermaBiotics suitable for sensitive skin? Yes. Pre and postbiotic ingredients are among the most gentle and beneficial in skincare and are particularly well suited to sensitive and reactive skin.

How long does it take to see results from microbiome-supporting ingredients? The skin renews approximately every four to six weeks. Consistent daily use of DermaBiotics-containing products throughout that cycle gives the microbiome the best opportunity to rebalance and strengthen.

Can DermaBiotics help with breakout-prone skin? Yes. A balanced microbiome supports a healthier skin environment overall, which can contribute to a clearer and more resilient complexion over time.

Does DermaBiotics replace probiotics I take internally? No. Topical pre and postbiotics work specifically on the skin's surface microbiome and complement rather than replace internal gut health support.

GLUCONOLACTONE (PHA)

Definition Gluconolactone is a Polyhydroxy Acid (PHA), a next-generation exfoliating ingredient that gently resurfaces the skin without the irritation often associated with traditional AHAs and BHAs. It is naturally derived and works by loosening the bonds between dead skin cells, promoting a smoother, more refined skin surface.

Key Skin Benefits

  • Gently exfoliates to refine skin texture and promote a smoother complexion.
  • Supports clearer-looking pores and reduces surface buildup.
  • Provides humectant properties, drawing moisture into the skin while exfoliating.
  • Suitable for daily use across all skin types including sensitive skin.
  • Antioxidant properties help protect against environmental stressors.

Best For

How to Use Gluconolactone is present in both The Lily Cleanser and The Sophia Serum. When used in a cleanser, it works during the cleansing step. When used in a serum, apply to clean dry skin before moisturising.

Layering Advice PHAs are gentle enough to use daily. Apply your PHA serum after cleansing and before moisturising. Unlike stronger exfoliating acids, Gluconolactone does not require a waiting period before layering other products.

Cautions Gluconolactone is one of the most gentle exfoliating ingredients available and is suitable for daily use even on sensitive skin. As with all exfoliating ingredients, consistent daily SPF use is recommended.

Products That Contain This Ingredient The Lily Cleanser — a gentle daily cleanser formulated with Gluconolactone alongside Lilly Pilly, Calendula, Papaya Fruit Extract, and Sage. The Sophia Serum — a daily balancing serum formulated with Gluconolactone alongside Niacinamide, Calendula, and Liquorice Root.

Related Learning Resources Read more about our Oily/Acneic collection

FAQs

What is the difference between a PHA and an AHA? AHAs such as glycolic and lactic acid are effective exfoliants but can cause irritation, particularly in sensitive skin. PHAs like Gluconolactone have a larger molecular size, meaning they work more gradually and gently at the skin's surface without penetrating as deeply, making them better tolerated across all skin types.

Can I use Gluconolactone every day? Yes. Gluconolactone is gentle enough for daily use in both AM and PM routines, unlike stronger exfoliating acids which are typically recommended only a few times per week.

Is Gluconolactone suitable for sensitive skin? Yes. It is one of the most gentle exfoliating ingredients available and is well tolerated by sensitive and reactive skin types.

Does Gluconolactone help with breakouts? Yes. By gently exfoliating the skin's surface and supporting clearer pores, Gluconolactone helps reduce congestion and supports a clearer-looking complexion over time.

Do I still need SPF if I use Gluconolactone? Yes. As with all exfoliating ingredients, daily broad spectrum SPF is recommended to protect the skin while it is undergoing gentle resurfacing.

GRAPESEED OIL

Definition Grapeseed Oil is a lightweight plant oil extracted from the seeds of Vitis vinifera, the common grape. It is high in linoleic acid, an essential fatty acid that plays an important role in supporting the skin barrier and helping to regulate sebum production.

Key Skin Benefits

  • High in linoleic acid, supporting barrier function and helping regulate oil balance.
  • Assists in managing hyperkeratosis and supporting clearer pores.
  • Provides mild astringent properties that help refine the skin's surface.
  • Lightweight and absorbs quickly without leaving a greasy finish.
  • Provides antioxidant protection with natural vitamin E content.

Best For

How to Use Grapeseed Oil is present in The Ruby Radiance Mask. Use the mask one to two times per week as a treatment mask or gentle exfoliant to support clearer, more refined skin.

Layering Advice Apply The Ruby Radiance Mask to damp skin and leave for up to 20 minutes before removing with warm water and a soft cloth. Follow with your usual serum and moisturiser.

Cautions Grapeseed Oil is well tolerated across all skin types. Those with a known allergy to grapes should patch test before use.

Products That Contain This Ingredient The Ruby Radiance Mask — a French red clay mask formulated with Grapeseed Oil alongside French Red Clay and Wildcrafted Raw Bush Honey.

Related Learning Resources Read our blog Won’t oil break me out? The truth about using oil on your skin

FAQs

Is Grapeseed Oil good for oily skin? Yes. Grapeseed Oil is high in linoleic acid, which helps support oil balance and is well suited to oily and breakout-prone skin types.

Will Grapeseed Oil clog pores? No. Grapeseed Oil is a lightweight, non-occlusive oil that absorbs quickly and is unlikely to block pores when used in appropriate formulations.

What is hyperkeratosis and how does Grapeseed Oil help? Hyperkeratosis refers to an excess buildup of keratin on the skin's surface, which can contribute to blocked pores and rough texture. The linoleic acid in Grapeseed Oil helps support a more balanced skin surface and clearer pores over time.

Can I use Grapeseed Oil every day? In The Ruby Radiance Mask, Grapeseed Oil is delivered one to two times per week as part of a purifying treatment. This is the recommended frequency for best results.

Is Grapeseed Oil a natural ingredient? Yes. Grapeseed Oil is a naturally derived plant oil used in The Functional Skin's formulations as part of a low-tox, synthetic-free approach to skincare.

GREEN TEA OIL

Definition Green Tea Oil is extracted from the seeds of the Camellia sinensis plant and is distinct from green tea extract. It is exceptionally rich in polyphenols, a class of antioxidants that help defend the skin against environmental stressors and support overall skin resilience.

Key Skin Benefits

  • Rich in polyphenols that help defend against free radical damage.
  • Supports skin resilience against environmental stressors.
  • Contributes to a brighter, more even-looking complexion.
  • Helps reduce the visible signs of environmental ageing over time.

Best For

How to Use Green Tea Oil is present in The Sunny Serum. Apply after cleansing and before moisturising, morning and evening, for consistent antioxidant protection.

Layering Advice Apply The Sunny Serum to clean, dry skin before your moisturiser. In the morning, follow with SPF to complement the antioxidant protection provided by Green Tea Oil.

Cautions Green Tea Oil is well tolerated across all skin types. It is used in The Sunny Serum as part of a fragrance-free, synthetic-free formulation, and contributes a mild natural fruity aroma to the product.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Green Tea Oil alongside Kakadu Plum, Hyaluronic Acid, Bearberry, Tasmanian Pepperberry, and Pentavitin.

Related Learning Resources Read more about our Pigmentation collection

FAQs

What is the difference between Green Tea Oil and Green Tea Extract? Green Tea Oil is extracted from the seeds of the Camellia sinensis plant and is rich in fatty acids and polyphenol antioxidants. Green Tea Extract is derived from the leaves and is water-based. Both offer antioxidant benefits but have different textures and applications in skincare formulations.

Does Green Tea Oil cause the mild aroma in The Sunny Serum? Yes. The Sunny Serum has a mild, naturally fruity aroma that comes from the Green Tea Oil. It contains no synthetic fragrance or essential oils.

Is Green Tea Oil suitable for sensitive skin? Yes. Green Tea Oil is well tolerated and is used in a fragrance-free, synthetic-free formulation in The Sunny Serum.

Can Green Tea Oil help with pigmentation? Green Tea Oil contributes antioxidant protection that helps defend against oxidative stress, one of the triggers of uneven skin tone and pigmentation. It is most effective when combined with other brightening ingredients as in The Sunny Serum.

Is Green Tea Oil natural? Yes. Green Tea Oil is a naturally derived plant oil used as part of The Functional Skin's commitment to low-tox, health-conscious formulations.

HEMP SEED OIL

Definition Hemp Seed Oil is a cold-pressed plant oil derived from the seeds of Cannabis sativa. It contains no THC and is valued in skincare for its exceptionally balanced ratio of omega-3 and omega-6 fatty acids, which closely mirrors the skin's own lipid profile, making it a well-suited ingredient for barrier support.

Key Skin Benefits

  • Supports oil balance and helps reduce excess sebum production.
  • Helps support a calmer-looking complexion and soothe the appearance of visible redness.
  • Non-occlusive and will not block pores.
  • Nourishes and supports the skin barrier with essential fatty acids.
  • Suitable for all skin types including oily and breakout-prone skin.

Best For

How to Use Hemp Seed Oil is used in The Grace Face Oil as part of a non-occlusive oil blend. Use as a first cleanse in the evening or as a nourishing finishing oil pressed over your moisturiser before bed.

Layering Advice When used as a cleansing oil, apply to dry skin before cleansing. When used as a nourishing treatment, apply as the final step in your PM routine after moisturiser.

Cautions Hemp Seed Oil contains no THC and has no psychoactive properties. It is well tolerated across all skin types. If you have a known sensitivity to Cannabis sativa, patch test before use.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose face oil formulated with Hemp Seed Oil alongside Camellia, Rosehip, Avocado, Coffee Seed Oil, and Squalane.

Related Learning Resources Read our blog Won’t oil break me out? The truth about using oil on your skin

FAQs

Does Hemp Seed Oil contain THC? No. Hemp Seed Oil is cold-pressed from the seeds of the Cannabis sativa plant and contains no THC. It has no psychoactive properties and is safe for topical use.

Is Hemp Seed Oil suitable for oily skin? Yes. Hemp Seed Oil has a fatty acid profile that closely mirrors the skin's own lipids, helping to support oil balance rather than adding to excess oiliness.

Will Hemp Seed Oil clog pores? No. Hemp Seed Oil is non-occlusive and will not block pores when used in appropriate formulations.

Does Hemp Seed Oil help with inflammation? Hemp Seed Oil helps support a calmer-looking complexion and soothe the appearance of visible redness, making it a considered choice for reactive skin types.

Is Hemp Seed Oil natural? Yes. Hemp Seed Oil is a naturally derived, cold-pressed plant oil and is part of The Functional Skin's commitment to low-tox, cruelty-free formulations.

HYALURONIC ACID

Definition Hyaluronic Acid is a naturally occurring molecule found in the skin, joints, and connective tissue. In skincare, it functions as a humectant, meaning it attracts and binds water to the skin to deliver lasting hydration and improved plumpness.

Key Skin Benefits

  • Attracts and binds moisture to the skin for deep, lasting hydration.
  • Helps improve skin plumpness and smoothness.
  • Supports a more comfortable, hydrated complexion throughout the day.
  • Suitable for all skin types including oily and sensitive skin.
  • Lightweight and layers seamlessly under other products.

Best For

How to Use Hyaluronic Acid is most effective when applied to slightly damp skin, as it draws available moisture into the skin. Apply The Sunny Serum after cleansing while the skin is still slightly damp, then seal with a moisturiser to prevent moisture evaporation.

Layering Advice Apply your Hyaluronic Acid serum after cleansing and before moisturising. Always follow with a moisturiser to seal in the hydration drawn in by the humectant. In the morning, follow with SPF.

Cautions Hyaluronic Acid is one of the most well-tolerated ingredients in skincare and is suitable for all skin types. In very dry or low-humidity environments, applying a moisturiser over the top is particularly important to prevent Hyaluronic Acid from drawing moisture from deeper skin layers.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Hyaluronic Acid alongside Kakadu Plum, Pentavitin, Bearberry, Tasmanian Pepperberry, and Green Tea Oil.

Related Learning Resources Read more about our Dry/Dehydrated collection

FAQs

What does Hyaluronic Acid do for the skin? Hyaluronic Acid is a humectant that attracts and binds water to the skin, helping improve hydration, plumpness, and overall skin comfort.

Is Hyaluronic Acid suitable for oily skin? Yes. Hyaluronic Acid is lightweight and non-comedogenic, making it suitable for all skin types including oily and breakout-prone skin.

Should I apply Hyaluronic Acid to damp or dry skin? Slightly damp skin is ideal. Hyaluronic Acid draws moisture from its environment, so applying it to damp skin and sealing with a moisturiser gives it the best conditions to work effectively.

Do I need a moisturiser on top of Hyaluronic Acid? Yes. A moisturiser is important to seal in the hydration drawn in by Hyaluronic Acid and prevent it from evaporating. The Isobel Moisturiser is an ideal pairing with The Sunny Serum for this reason.

Is Hyaluronic Acid natural? Hyaluronic Acid is found naturally in the body. The version used in skincare is typically produced through a fermentation process, making it a biotechnology-derived ingredient rather than animal-derived.

KAKADU PLUM

Definition Kakadu Plum, known scientifically as Terminalia ferdinandiana, is a native Australian fruit and one of the richest known natural sources of Vitamin C in the world. It contains natural Vitamin C compounds including ascorbic acid alongside a range of antioxidant polyphenols, making it a powerful yet gentle brightening ingredient.

Key Skin Benefits

  • One of the richest natural sources of Vitamin C, supporting a brighter, more even-looking complexion.
  • Provides potent antioxidant protection against free radical damage.
  • Helps support balanced melanin production and a more even skin tone.
  • Supports skin resilience against environmental stressors.
  • A natural and gentle alternative to synthetic Vitamin C derivatives.

Best For

How to Use Apply The Sunny Serum containing Kakadu Plum after cleansing and before moisturising, morning and evening. Consistent daily use supports cumulative brightening and antioxidant benefits over time.

Layering Advice Apply after cleansing and before moisturising. In the morning, always follow with a broad spectrum SPF to protect the skin and complement the antioxidant benefits of Kakadu Plum.

Cautions Kakadu Plum is a gentle natural source of Vitamin C and is generally very well tolerated. Unlike some synthetic Vitamin C derivatives, it is less likely to cause irritation or sensitivity. Always pair with SPF when using brightening ingredients.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Kakadu Plum Seed Extract and Oil alongside Hyaluronic Acid, Pentavitin, Bearberry, Tasmanian Pepperberry, and Green Tea Oil.

Related Learning Resources Read more about our Pigmentation collection

FAQs

What makes Kakadu Plum special as a Vitamin C source? Kakadu Plum is one of nature's richest sources of Vitamin C, containing significantly higher concentrations than many other commonly cited Vitamin C-rich foods and plants. It also contains a range of antioxidant polyphenols that work synergistically with its Vitamin C content.

Is Kakadu Plum better than synthetic Vitamin C in skincare? Kakadu Plum provides natural Vitamin C compounds alongside a broader range of antioxidants, making it a gentle and multifaceted brightening ingredient. It is less likely to cause the irritation sometimes associated with high concentrations of synthetic ascorbic acid.

Is Kakadu Plum an Australian ingredient? Yes. Kakadu Plum is a native Australian botanical and is one of the hero ingredients in The Functional Skin's formulations, reflecting the brand's commitment to using evidence-informed native Australian actives.

Does Kakadu Plum help with pigmentation? Kakadu Plum supports a more even-looking complexion and helps defend against oxidative stress, one of the key triggers of uneven skin tone. It is not a treatment for pigmentation but supports the appearance of brighter, more even skin over time with consistent use.

Do I need SPF when using Kakadu Plum? Yes. Daily broad spectrum SPF is essential when using any brightening ingredient to protect against UV-triggered pigmentation and complement the antioxidant benefits of Kakadu Plum.

LACTOBACILLUS FERMENT

Definition Lactobacillus Ferment is a postbiotic ingredient derived from the fermentation of Lactobacillus bacteria. In skincare, It is used to support the skin's microbiome, helping to maintain a balanced and resilient skin environment while promoting lasting skin comfort.

Key Skin Benefits

  • Supports a balanced and healthy skin microbiome.
  • Helps maintain long-term skin resilience and barrier integrity.
  • Provides gentle support for reactive and sensitive skin.
  • Works alongside other barrier-supporting ingredients to promote a calmer complexion.

Best For

How to Use Lactobacillus Ferment is present in The Charlotte Calming Cream. Apply morning and evening after cleansing and serum application as your moisturising step for consistent microbiome support.

Layering Advice Apply The Charlotte Calming Cream after your serum as your final moisturising step. It works well alongside other barrier-supporting and hydrating products in your routine.

Cautions Lactobacillus Ferment is very well tolerated and is considered one of the gentlest microbiome-supporting ingredients available. It is suitable for all skin types including sensitive and reactive skin.

Products That Contain This Ingredient The Charlotte Calming Cream — a rich calming cream formulated with Lactobacillus Ferment alongside Oat Kernel Oil, Mango Seed Butter, Niacinamide, Beta Glucan, and Colloidal Silver.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What is Lactobacillus Ferment? Lactobacillus Ferment is a postbiotic derived from the fermentation of Lactobacillus bacteria. It is used in skincare to support the skin's microbiome and help maintain a balanced, resilient skin environment.

Is Lactobacillus Ferment the same as a probiotic? Lactobacillus Ferment is a postbiotic, meaning it is a beneficial byproduct of probiotic activity rather than a live microorganism. Postbiotics are stable and well suited to topical skincare formulations.

Is Lactobacillus Ferment suitable for sensitive skin? Yes. It is one of the most gentle microbiome-supporting ingredients in skincare and is particularly beneficial for sensitive and reactive skin types.

How does Lactobacillus Ferment support the skin barrier? By supporting a balanced microbiome, Lactobacillus Ferment helps reinforce the skin's natural defences and contributes to long-term barrier resilience and skin comfort.

Can I use products with Lactobacillus Ferment every day? Yes. It is safe and beneficial for daily use as part of a consistent moisturising routine.

LILLY PILLY EXTRACT

Definition Lilly Pilly Extract, derived from Syzygium luehmannii, is a native Australian botanical rich in antioxidants. It is used in skincare to support a brighter-looking complexion, protect against environmental stressors, and contribute to overall skin resilience.

Key Skin Benefits

  • Rich in antioxidants that help protect against free radical damage.
  • Supports a brighter-looking, more even complexion.
  • Helps calm and comfort the skin.
  • A native Australian botanical that reflects a commitment to evidence-informed, locally sourced ingredients.

Best For

How to Use Lilly Pilly Extract is present in both The Lily Cleanser and The Isobel Moisturiser. Use your cleanser morning and evening as part of your daily routine, and follow with The Isobel Moisturiser to layer antioxidant protection.

Layering Advice Lilly Pilly in The Lily Cleanser works during the cleansing step. In The Isobel Moisturiser, it delivers antioxidant benefits as part of your moisturising step after serum application.

Cautions Lilly Pilly Extract is well tolerated across all skin types. It is a gentle native botanical with no known common sensitisers.

Products That Contain This Ingredient The Lily Cleanser — a gentle daily cleanser formulated with Lilly Pilly alongside Gluconolactone, Calendula, Papaya Fruit Extract, and Sage. The Isobel Moisturiser — a barrier repair moisturiser formulated with Lilly Pilly alongside DermaBiotics, Pumpkin Seed Oil, Squalane, and Vitamin B5.

Related Learning Resources  Read more about our Dry/Dehydrated collection

FAQs

What is Lilly Pilly? Lilly Pilly is a native Australian plant from the genus Syzygium. The extract from its fruit is rich in antioxidants and is used in skincare to support a brighter-looking complexion and protect against environmental stressors.

Is Lilly Pilly suitable for sensitive skin? Yes. Lilly Pilly Extract is a gentle native botanical that is well tolerated across all skin types including sensitive and reactive skin.

Does Lilly Pilly brighten the skin? Lilly Pilly supports a brighter-looking complexion through its antioxidant content, helping to defend against the oxidative stress that can contribute to dullness and uneven tone.

Is Lilly Pilly an Australian ingredient? Yes. Lilly Pilly is a native Australian botanical and is one of the hero ingredients across The Functional Skin range, reflecting the brand's commitment to using locally sourced, evidence-informed actives.

Can I use Lilly Pilly every day? Yes. It is present in The Lily Cleanser and The Isobel Moisturiser, both of which are formulated for daily morning and evening use.

LIQUORICE ROOT

Definition Liquorice Root Extract, derived from Glycyrrhiza glabra, is a well-regarded botanical ingredient in skincare known for its brightening and soothing properties. It contains glabridin, a compound that helps support a more even-looking complexion and calm visible redness.

Key Skin Benefits

  • Helps support the fading of dark marks and promote a more even complexion.
  • Calms and soothes visible redness and irritation.
  • Contributes to a brighter, more balanced skin tone.
  • Gentle enough for daily use across all skin types.

Best For

How to Use Liquorice Root is present in The Sophia Serum. Apply after cleansing and before moisturising, morning and evening, for consistent brightening and calming support.

Layering Advice Apply The Sophia Serum to clean, dry skin before your moisturiser. In the morning, follow with a broad spectrum SPF to protect the skin and complement the brightening benefits of Liquorice Root.

Cautions Liquorice Root Extract is generally very well tolerated across all skin types. Always pair with daily SPF when using brightening ingredients for best results.

Products That Contain This Ingredient The Sophia Serum — a daily balancing serum formulated with Liquorice Root alongside Niacinamide, Calendula, Sage, and Gluconolactone.

Related Learning Resources Read more about our Pigmentation collection

FAQs

What does Liquorice Root do for the skin? Liquorice Root contains glabridin, a compound that helps support a more even-looking complexion, calms visible redness, and contributes to a brighter skin tone with consistent use.

Is Liquorice Root suitable for sensitive skin? Yes. Liquorice Root Extract is a gentle botanical ingredient that is well tolerated across most skin types, including sensitive and reactive skin.

Does Liquorice Root help with post-breakout marks? Yes. Liquorice Root is used in The Sophia Serum alongside Niacinamide to help support the fading of dark marks left behind by breakouts and contribute to a more even complexion over time.

Can I use Liquorice Root every day? Yes. It is present in The Sophia Serum, which is formulated for daily morning and evening use.

Do I need SPF when using Liquorice Root? Yes. Daily broad spectrum SPF is important when using any brightening ingredient to protect against UV-triggered pigmentation and support the best possible results.

MANGO SEED BUTTER

Definition Mango Seed Butter is extracted from the seeds of Mangifera indica, the mango fruit. It is a rich, nourishing butter that melts into the skin to deliver deep hydration and softness, making it a valuable ingredient for dry, compromised, and sensitive skin.

Key Skin Benefits

  • Deeply nourishing and softening for dry and compromised skin.
  • Supports barrier repair with essential fatty acids and natural emollients.
  • Helps restore hydration and comfort to reactive and irritated skin.
  • Absorbs without leaving a heavy or greasy finish.

Best For

How to Use Mango Seed Butter is present in The Charlotte Calming Cream. Apply morning and evening after cleansing and serum application as your moisturising step for consistent hydration and barrier support.

Layering Advice Apply The Charlotte Calming Cream as your final moisturising step after serum. It can also be used as an overnight nourishing mask by applying a small amount over your usual routine before bed and rinsing in the morning.

Cautions Mango Seed Butter is well tolerated across all skin types. Those with a known mango allergy should patch test before use.

Products That Contain This Ingredient The Charlotte Calming Cream — a rich calming cream formulated with Mango Seed Butter alongside Oat Kernel Oil, Niacinamide, Beta Glucan, Lactobacillus Ferment, and Colloidal Silver.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What is Mango Seed Butter used for in skincare? Mango Seed Butter is used as a deeply nourishing and softening ingredient that helps restore hydration and support barrier repair in dry, compromised, and sensitive skin.

Is Mango Seed Butter suitable for sensitive skin? Yes. It is a key ingredient in The Charlotte Calming Cream, which is formulated specifically for sensitive, dry, and reactive skin of all ages.

Will Mango Seed Butter feel heavy on the skin? No. Despite being a rich butter, it is formulated in The Charlotte Calming Cream to absorb without leaving a greasy or heavy finish.

Can Mango Seed Butter be used as an overnight treatment? Yes. The Charlotte Calming Cream can be applied as a leave-on overnight mask. Apply a small amount over your routine before bed and rinse off in the morning for intensive overnight nourishment.

Is Mango Seed Butter natural? Yes. Mango Seed Butter is a naturally derived ingredient extracted from the seeds of the mango fruit and is part of The Functional Skin's low-tox, health-conscious approach to formulation.

NIACINAMIDE (VITAMIN B3)

Definition Niacinamide, also known as Vitamin B3, is a water-soluble vitamin that is widely regarded as one of the most versatile and well-researched ingredients in skincare. It works across multiple skin concerns simultaneously, supporting oil regulation, barrier function, and a more even complexion.

Key Skin Benefits

  • Helps regulate oil production and reduce excess shine.
  • Reduces the appearance of visible redness and uneven skin tone.
  • Supports and strengthens the skin barrier over time.
  • Helps improve the appearance of skin texture and clarity.
  • Well tolerated across all skin types including sensitive skin.

Best For

How to Use Niacinamide is present in both The Sophia Serum and The Charlotte Calming Cream. Apply your serum after cleansing and before moisturising. Follow with your moisturiser to seal in hydration and layer Niacinamide's benefits.

Layering Advice Niacinamide is compatible with most other skincare ingredients and layers well in both AM and PM routines. Apply after cleansing and before heavier moisturisers. It does not require any special considerations when layering.

Cautions Niacinamide is one of the most well-tolerated skincare ingredients available. High concentrations above 10% can occasionally cause temporary flushing in very sensitive individuals, but the concentrations used in The Functional Skin's formulations are designed for daily comfort and compatibility.

Products That Contain This Ingredient The Sophia Serum — a daily balancing serum formulated with Niacinamide alongside Calendula, Liquorice Root, Sage, and Gluconolactone. The Charlotte Calming Cream — a rich calming cream formulated with Niacinamide alongside Oat Kernel Oil, Mango Seed Butter, Beta Glucan, and Lactobacillus Ferment.

Related Learning Resources Read our Charlotte Calming Cream blog

FAQs

What does Niacinamide do for the skin? Niacinamide is a multitasking ingredient that helps regulate oil production, reduce visible redness, support barrier function, and improve the overall clarity and texture of the skin.

Can I use Niacinamide every day? Yes. Niacinamide is gentle enough for daily use morning and evening and is one of the few active ingredients suitable for consistent use across all skin types.

Is Niacinamide suitable for sensitive skin? Yes. Niacinamide is one of the most well-tolerated active ingredients in skincare and is particularly beneficial for reactive and sensitive skin that needs barrier support alongside clarifying benefits.

Can Niacinamide be layered with other actives? Yes. Niacinamide is compatible with most skincare ingredients and layers well in both AM and PM routines without requiring special precautions.

How long does it take to see results from Niacinamide? The skin renews approximately every four to six weeks. Consistent daily use throughout that cycle supports cumulative improvements in clarity, tone, and barrier strength over time.

OAT KERNEL OIL

Definition Oat Kernel Oil is extracted from the kernel of Avena sativa, the common oat. It is exceptionally rich in beta-glucan, ceramides, and essential fatty acids that collectively support the skin barrier, soothe the appearance of visible redness, and deliver lasting hydration to sensitive and compromised skin.

Key Skin Benefits

  • Deeply soothes visible redness and irritation.
  • Supports and strengthens the skin barrier with ceramides and essential fatty acids.
  • Delivers lasting hydration to dry and compromised skin.
  • Helps calm reactive and sensitive skin over time.
  • Suitable for all skin types including those prone to dryness and irritation.

Best For

How to Use Oat Kernel Oil is the core ingredient in The Charlotte Calming Cream. Apply morning and evening after cleansing and serum application for consistent soothing and barrier support.

Layering Advice Apply The Charlotte Calming Cream as your moisturising step after serum. It can also be used as an overnight leave-on mask for intensive repair. Apply a small amount over your routine before bed and rinse off in the morning.

Cautions Oat Kernel Oil is extremely well tolerated and is considered one of the most gentle ingredients in skincare. It is distinct from colloidal oat or oat flour and is unlikely to cause reactions in those with oat or gluten sensitivities, though patch testing is recommended if you have a known sensitivity.

Products That Contain This Ingredient The Charlotte Calming Cream — a rich calming cream formulated with Oat Kernel Oil alongside Mango Seed Butter, Niacinamide, Beta Glucan, Lactobacillus Ferment, and Colloidal Silver.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What makes Oat Kernel Oil different from colloidal oat? Oat Kernel Oil is extracted from the kernel and is rich in lipids, ceramides, and essential fatty acids that support barrier repair. Colloidal oat is finely milled oat that is more commonly used for its soothing properties in bath and body products. Both are beneficial but have different textures and applications in skincare.

Is Oat Kernel Oil suitable for reactive skin? Yes. Oat Kernel Oil is one of the most gentle and well-tolerated soothing ingredients in skincare and is particularly beneficial for reactive, sensitive, and dry skin types.

Does Oat Kernel Oil help with redness? Yes. Oat Kernel Oil helps soothe visible redness and calm irritation, making it the core ingredient in The Charlotte Calming Cream.

Can I use Oat Kernel Oil if I have a gluten sensitivity? Oat Kernel Oil is a lipid-rich oil rather than a protein or flour-based ingredient and is generally considered safe for those with gluten sensitivities. If you have a known oat allergy, patch test before use.

Is Oat Kernel Oil natural? Yes. Oat Kernel Oil is a naturally derived plant oil and is part of The Functional Skin's commitment to low-tox, health-conscious formulations.

PAPAYA FRUIT EXTRACT

Definition Papaya Fruit Extract is derived from Carica papaya and contains natural enzymes, including papain, that help gently dissolve and remove dead skin cells from the skin's surface. It is used in skincare as a mild enzymatic exfoliant that refines texture without the irritation associated with stronger chemical exfoliants.

Key Skin Benefits

  • Gently dissolves dead skin cells to promote smoother-feeling skin.
  • Helps refine skin texture and support a more even surface.
  • Removes surface buildup that can contribute to dullness and congestion.
  • Gentle enough for use in a daily cleanser across all skin types.

Best For

How to Use Papaya Fruit Extract is present in The Lily Cleanser. Use morning and evening as your daily cleansing step, massaging over the face and neck for approximately one minute before rinsing.

Layering Advice Papaya Fruit Extract works during the cleansing step and does not require any additional layering considerations. Follow cleansing with your usual serum and moisturiser.

Cautions Papaya Fruit Extract is gentle and well tolerated across most skin types. Those with a known papaya or latex allergy should patch test before use, as papain can occasionally cause sensitivity in those with latex sensitivities.

Products That Contain This Ingredient The Lily Cleanser — a gentle daily cleanser formulated with Papaya Fruit Extract alongside Lilly Pilly, Gluconolactone, Calendula, and Sage.

Related Learning Resources Read more about our Dry/Dehydrated collection

FAQs

What does Papaya Fruit Extract do in a cleanser? Papaya Fruit Extract contains natural enzymes that help gently dissolve dead skin cells during cleansing, supporting a smoother skin surface and reducing surface buildup without harsh abrasion.

Is Papaya Fruit Extract suitable for sensitive skin? Yes. In The Lily Cleanser it is used alongside other gentle botanicals in a formulation designed for all skin types including sensitive skin.

Is enzymatic exfoliation different from chemical exfoliation? Yes. Enzymatic exfoliants like Papaya Fruit Extract work by breaking down dead skin cell proteins on the surface of the skin. Chemical exfoliants like AHAs and BHAs work by loosening the bonds between skin cells. Enzymatic exfoliation is generally considered gentler and more suitable for daily use.

Can I use The Lily Cleanser with Papaya Fruit Extract every day? Yes. The Lily Cleanser is formulated for daily morning and evening use across all skin types.

Is Papaya Fruit Extract natural? Yes. Papaya Fruit Extract is a naturally derived botanical ingredient used as part of The Functional Skin's low-tox, plant-based approach to formulation.

PENTAVITIN

Definition Pentavitin, also known as Saccharide Isomerate, is a plant-derived humectant that binds to the skin's natural moisture complex and delivers long-lasting hydration. Unlike Hyaluronic Acid, which draws moisture from the environment, Pentavitin forms a moisture reservoir within the skin itself, providing sustained hydration that lasts for up to 72 hours.

Key Skin Benefits

  • Delivers long-lasting hydration by binding directly to the skin's keratin proteins.
  • Helps prevent transepidermal water loss and skin dehydration.
  • Supports a plumper, more comfortable complexion throughout the day.
  • Complements Hyaluronic Acid for comprehensive hydration support.
  • Well tolerated across all skin types.

Best For

How to Use Pentavitin is present in The Sunny Serum. Apply after cleansing and before moisturising, morning and evening, for consistent long-lasting hydration support.

Layering Advice Apply The Sunny Serum to clean skin before your moisturiser. Follow with The Isobel Moisturiser to seal in the hydration delivered by Pentavitin and support lasting skin comfort throughout the day.

Cautions Pentavitin is extremely well tolerated and is considered one of the safest and most gentle hydrating ingredients available. It is suitable for all skin types.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Pentavitin alongside Kakadu Plum, Hyaluronic Acid, Bearberry, Tasmanian Pepperberry, and Green Tea Oil.

Related Learning Resources Read more about our Dry/Dehydrated collection

FAQs

What is Pentavitin and how is it different from Hyaluronic Acid? Pentavitin is a plant-derived humectant that binds to the skin's natural moisture complex to deliver sustained hydration from within. Hyaluronic Acid draws moisture from the environment into the skin. Together they provide complementary and comprehensive hydration support.

How long does Pentavitin last on the skin? Pentavitin is shown to support long-lasting hydration by binding to the skin's natural proteins, making it one of the most effective long-lasting humectants available.

Is Pentavitin suitable for sensitive skin? Yes. Pentavitin is extremely well tolerated and is considered one of the gentlest hydrating ingredients in skincare.

Can I use Pentavitin every day? Yes. It is present in The Sunny Serum, which is formulated for daily morning and evening use.

Is Pentavitin natural? Pentavitin is plant-derived, sourced from sugarcane or corn, and is part of The Functional Skin's commitment to low-tox, health-conscious ingredient selection.

PUMPKIN SEED OIL

Definition Pumpkin Seed Oil is a nutrient-dense plant oil extracted from the seeds of Cucurbita pepo. It is rich in Vitamin E, zinc, essential fatty acids, and antioxidants, making it a deeply nourishing and protective ingredient that supports barrier repair and helps soothe the appearance of redness in compromised skin.

Key Skin Benefits

  • Rich in Vitamin E, zinc, and essential fatty acids that support barrier repair.
  • Helps support a calmer-looking complexion and soothe the appearance of visible redness.
  • Nourishes and restores compromised skin without clogging pores.
  • Provides antioxidant protection against environmental stressors.
  • Suitable for reactive, sensitive, and breakout-prone skin.

Best For

How to Use Pumpkin Seed Oil is present in The Isobel Moisturiser. Apply morning and evening after cleansing and serum application as your moisturising step for consistent barrier support and nourishment.

Layering Advice Apply The Isobel Moisturiser as your final moisturising step after serum. In the morning, follow with SPF. For additional nourishment, The Grace Face Oil can be mixed with The Isobel Moisturiser in the evening for a richer overnight treatment.

Cautions Pumpkin Seed Oil is well tolerated across all skin types. It is a non-comedogenic oil suitable for breakout-prone and reactive skin when used in appropriate formulations.

Products That Contain This Ingredient The Isobel Moisturiser — a barrier repair moisturiser formulated with Pumpkin Seed Oil alongside DermaBiotics, Squalane, Vitamin B5, Lilly Pilly, and Quandong.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What makes Pumpkin Seed Oil good for the skin? Pumpkin Seed Oil is rich in Vitamin E, zinc, and essential fatty acids that collectively support barrier repair, help soothe the appearance of visible redness, and nourish compromised skin without blocking pores.

Is Pumpkin Seed Oil suitable for breakout-prone skin? Yes. Pumpkin Seed Oil is non-comedogenic and is formulated in The Isobel Moisturiser alongside barrier-supporting and microbiome-balancing ingredients, making it suitable for breakout-prone and reactive skin.

Does Pumpkin Seed Oil clog pores? No. It is a non-comedogenic oil that nourishes and protects without blocking pores.

Can I use Pumpkin Seed Oil every day? Yes. It is present in The Isobel Moisturiser, which is formulated for daily morning and evening use.

Is Pumpkin Seed Oil natural? Yes. Pumpkin Seed Oil is a naturally derived plant oil and is part of The Functional Skin's low-tox, health-conscious approach to formulation.

QUANDONG

Definition Quandong, known scientifically as Santalum acuminatum, is a native Australian desert fruit rich in antioxidants, rutin, and Vitamin C. It is used in skincare to support antioxidant protection, skin vitality, and overall resilience against environmental stressors.

Key Skin Benefits

  • Provides antioxidant protection against free radical damage.
  • Supports overall skin vitality and resilience.
  • Contributes to a healthier-looking complexion over time.
  • A native Australian botanical that reflects a commitment to locally sourced, evidence-informed ingredients.

Best For

How to Use Quandong is present in The Isobel Moisturiser. Apply morning and evening after cleansing and serum application as your moisturising step for consistent antioxidant and barrier support.

Layering Advice Apply The Isobel Moisturiser as your final moisturising step after serum. In the morning, follow with a broad spectrum SPF to complement the antioxidant benefits of Quandong.

Cautions Quandong is well tolerated across all skin types. It is a gentle native Australian botanical with no known common sensitisers.

Products That Contain This Ingredient The Isobel Moisturiser — a barrier repair moisturiser formulated with Quandong alongside DermaBiotics, Pumpkin Seed Oil, Squalane, Vitamin B5, and Lilly Pilly.

Related Learning Resources Read more about our Mature collection

FAQs

What is Quandong? Quandong is a native Australian desert fruit known for its antioxidant content, including rutin and natural Vitamin C. It is used in skincare to support skin vitality and antioxidant protection.

Is Quandong an Australian ingredient? Yes. Quandong is a native Australian botanical and reflects The Functional Skin's commitment to using locally sourced, evidence-informed actives in their formulations.

What does Quandong do for the skin? Quandong provides antioxidant protection that helps defend the skin against free radical damage and supports overall skin vitality and resilience over time.

Is Quandong suitable for sensitive skin? Yes. It is a gentle native botanical that is well tolerated across all skin types.

Can I use Quandong every day? Yes. It is present in The Isobel Moisturiser, which is formulated for daily morning and evening use.

ROSEHIP OIL

Definition Rosehip Oil is a cold-pressed plant oil extracted from the seeds of Rosa canina and related rose species. It is rich in essential fatty acids, including linoleic and alpha-linolenic acid, as well as natural antioxidants, making it one of the most nourishing and skin-supportive plant oils available.

Key Skin Benefits

  • Rich in essential fatty acids that nourish and support barrier repair.
  • Provides antioxidant protection against environmental stressors.
  • Supports a more even-looking complexion over time.
  • Nourishes and protects without leaving a heavy finish.
  • Suitable for all skin types including sensitive and reactive skin.

Best For

How to Use Rosehip Oil is present in The Grace Face Oil. Use as a first cleanse in the evening or as a nourishing finishing oil pressed over your moisturiser before bed for overnight barrier support.

Layering Advice When used as a cleansing oil, apply to dry skin before cleansing. When used as a nourishing treatment, apply as the final step in your PM routine after moisturiser.

Cautions: Rosehip Oil is well tolerated across most skin types and is formulated in The Grace Face Oil for daily use.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose face oil formulated with Rosehip Oil alongside Hemp Seed, Camellia, Avocado, Coffee Seed Oil, and Squalane.

Related Learning Resources Read Won’t Oil Break Me Out? The Truth About Using Oil On Your Skin blog.

FAQs

What makes Rosehip Oil so popular in skincare? Rosehip Oil is valued for its rich essential fatty acid content and antioxidant properties, which collectively support barrier repair, nourishment, and a more even-looking complexion.

Is Rosehip Oil suitable for oily skin? Yes. Rosehip Oil is used in The Grace Face Oil in a non-occlusive blend that will not block pores and is suitable for all skin types including oily and reactive skin.

Does Rosehip Oil help with pigmentation? Rosehip Oil contains natural antioxidants and essential fatty acids that help support a more even-looking complexion over time with consistent use.

Can I use Rosehip Oil every day? Yes. It is present in The Grace Face Oil, which is suitable for daily use as a cleansing oil or nourishing overnight treatment.

Is Rosehip Oil natural? Yes. Rosehip Oil is a naturally derived, cold-pressed plant oil and is part of The Functional Skin's commitment to low-tox, synthetic-free formulations.

SAGE EXTRACT

Definition Sage Extract, derived from Salvia officinalis, is a botanical ingredient with a long history of use for its purifying and clarifying properties. In skincare, it helps refresh and balance the skin without stripping, making it a gentle yet effective addition to cleansing and clarifying formulations.

Key Skin Benefits

  • Helps purify and refresh the skin without disrupting the barrier.
  • Supports a clearer-looking, more balanced complexion.
  • Gentle clarifying properties suitable for daily use.
  • Works well alongside other calming and balancing botanicals.

Best For

How to Use Sage Extract is present in both The Lily Cleanser and The Sophia Serum. Use your cleanser morning and evening and follow with The Sophia Serum for layered clarifying and balancing support.

Layering Advice Sage in The Lily Cleanser works during the cleansing step. In The Sophia Serum, it delivers clarifying benefits as part of your serum step applied after cleansing and before moisturising.

Cautions Sage Extract is well tolerated across most skin types. Those with a known sensitivity to Lamiaceae family plants should patch test before use.

Products That Contain This Ingredient The Lily Cleanser — a gentle daily cleanser formulated with Sage Extract alongside Lilly Pilly, Gluconolactone, Calendula, and Papaya Fruit Extract. The Sophia Serum — a daily balancing serum formulated with Sage alongside Niacinamide, Calendula, Liquorice Root, and Gluconolactone.

Related Learning Resources Read more about our Oily/Acneic collection

FAQs

What does Sage Extract do in skincare? Sage Extract helps purify and refresh the skin, supporting a clearer-looking and more balanced complexion without stripping or disrupting the barrier.

Is Sage Extract suitable for sensitive skin? Sage Extract is used in low concentrations in both The Lily Cleanser and The Sophia Serum alongside other calming botanicals, making it suitable for most skin types. If you have a known sensitivity, patch test before use.

Does Sage Extract help with oily skin? Yes. Sage Extract has clarifying properties that help support oil balance and a clearer-looking complexion, making it a well-suited ingredient in routines for oily and breakout-prone skin.

Can I use Sage Extract every day? Yes. It is present in The Lily Cleanser and The Sophia Serum, both of which are formulated for daily morning and evening use.

Is Sage Extract natural? Yes. Sage Extract is a naturally derived botanical ingredient used as part of The Functional Skin's low-tox, plant-based approach to formulation.

SQUALANE

Definition Squalane is a stable, plant-derived form of squalene, a lipid naturally produced by the skin. It is one of the most effective and well-tolerated emollient ingredients in skincare, helping to maintain the skin's moisture barrier, prevent water loss, and deliver long-lasting nourishment without heaviness.

Key Skin Benefits

  • Reinforces the skin's moisture barrier and helps prevent transepidermal water loss.
  • Delivers long-lasting nourishment without clogging pores.
  • Lightweight and absorbs quickly without a greasy finish.
  • Suitable for all skin types including oily and reactive skin.
  • Helps protect the skin against environmental stressors.

Best For

How to Use Squalane is present in both The Grace Face Oil and The Isobel Moisturiser. Use The Grace Face Oil as a first cleanse or overnight finishing oil, and The Isobel Moisturiser as your daily moisturising step after serum.

Layering Advice Squalane-containing products work well as part of both AM and PM routines. Apply your moisturiser after serum and before SPF in the morning. In the evening, The Grace Face Oil can be pressed over The Isobel Moisturiser as a final sealing step.

Cautions Squalane is one of the most well-tolerated ingredients in skincare. It is non-comedogenic and suitable for all skin types including sensitive and reactive skin.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose face oil formulated with Squalane alongside Hemp Seed, Camellia, Rosehip, Avocado, and Coffee Seed Oil. The Isobel Moisturiser — a barrier repair moisturiser formulated with Squalane alongside DermaBiotics, Pumpkin Seed Oil, Vitamin B5, Lilly Pilly, and Quandong.

Related Learning Resources Read Won’t Oil Break Me Out? The Truth About Using Oil On Your Skin blog.

FAQs

What is the difference between Squalane and Squalene? Squalene is a naturally occurring lipid found in the skin and in some plant and animal sources. Squalane is a hydrogenated, stabilised form of squalene that is more suitable for skincare formulations as it is less prone to oxidation and has a longer shelf life.

Is Squalane suitable for oily skin? Yes. Squalane is lightweight and non-comedogenic, making it suitable for all skin types including oily and breakout-prone skin.

Will Squalane clog pores? No. Squalane is non-comedogenic and will not block pores when used in appropriate formulations.

Is Squalane vegan? The Squalane used in The Functional Skin's formulations is plant-derived, sourced from sugarcane or olives rather than shark liver oil, and is cruelty-free.

Can I use Squalane every day? Yes. It is present in both The Grace Face Oil and The Isobel Moisturiser, both of which are formulated for daily morning and evening use.

TASMANIAN PEPPERBERRY

Definition Tasmanian Pepperberry, known scientifically as Tasmannia lanceolata, is a native Australian plant rich in polygodial and other antioxidant compounds. It is used in skincare for its calming and skin-balancing properties, helping to support a settled, resilient complexion.

Key Skin Benefits

  • Helps calm and balance the skin.
  • Provides antioxidant support against environmental stressors.
  • Supports overall skin resilience and comfort.
  • A native Australian botanical with evidence-informed calming properties.

Best For

How to Use Tasmanian Pepperberry is present in The Sunny Serum. Apply after cleansing and before moisturising, morning and evening, for consistent antioxidant and calming support.

Layering Advice Apply The Sunny Serum to clean skin before your moisturiser. In the morning, follow with SPF to complement the antioxidant benefits of Tasmanian Pepperberry.

Cautions Tasmanian Pepperberry is well tolerated across most skin types. It is used at cosmetically appropriate concentrations in The Sunny Serum and is unlikely to cause sensitivity.

Products That Contain This Ingredient The Sunny Serum — a brightening face serum formulated with Tasmanian Pepperberry alongside Kakadu Plum, Hyaluronic Acid, Bearberry, Pentavitin, and Green Tea Oil.

Related Learning Resources Read more about our Inflamed/Sensitive collection

FAQs

What is Tasmanian Pepperberry used for in skincare? Tasmanian Pepperberry is used for its calming and antioxidant properties, helping to support a settled, balanced complexion and defend against environmental stressors.

Is Tasmanian Pepperberry an Australian ingredient? Yes. Tasmanian Pepperberry is a native Australian botanical and reflects The Functional Skin's commitment to using locally sourced, evidence-informed actives.

Is Tasmanian Pepperberry spicy or irritating on the skin? No. At cosmetically appropriate concentrations, Tasmanian Pepperberry is calming rather than irritating. It is formulated in The Sunny Serum to support skin balance and comfort.

Is Tasmanian Pepperberry suitable for sensitive skin? Yes. It is used in The Sunny Serum as part of a fragrance-free, synthetic-free formulation suitable for most skin types.

Can I use Tasmanian Pepperberry every day? Yes. It is present in The Sunny Serum, which is formulated for daily morning and evening use.

VITAMIN B5 (PANTHENOL)

Definition Vitamin B5, also known as Panthenol, is a water-soluble vitamin that converts to pantothenic acid in the skin. It is a deeply effective humectant and skin-conditioning ingredient that supports hydration, barrier function, and the skin's natural recovery process.

Key Skin Benefits

  • Supports deep hydration and helps retain moisture in the skin.
  • Enhances the skin's natural barrier function and recovery process.
  • Helps soothe and calm reactive and irritated skin.
  • Lightweight and absorbs quickly, suitable for all skin types.
  • Works synergistically with other barrier-supporting ingredients.

Best For

How to Use Vitamin B5 is present in The Isobel Moisturiser. Apply morning and evening after cleansing and serum application as your moisturising step for consistent hydration and barrier support.

Layering Advice Apply The Isobel Moisturiser as your final moisturising step after serum. In the morning, follow with SPF. It works well alongside humectant serums such as The Sunny Serum for comprehensive hydration layering.

Cautions Vitamin B5 is one of the most well-tolerated ingredients in skincare. It is suitable for all skin types including sensitive, reactive, and compromised skin.

Products That Contain This Ingredient The Isobel Moisturiser — a barrier repair moisturiser formulated with Vitamin B5 alongside DermaBiotics, Pumpkin Seed Oil, Squalane, Lilly Pilly, and Quandong.

Related Learning Resources Read more about our Dry/Dehydrated collection

FAQs

What is Vitamin B5 and what does it do for the skin? Vitamin B5, or Panthenol, is a water-soluble vitamin that supports deep hydration, enhances barrier function, and helps the skin recover from dryness and irritation. It is one of the most effective and well-tolerated moisturising ingredients in skincare.

Is Vitamin B5 suitable for sensitive skin? Yes. Vitamin B5 is one of the most gentle and well-tolerated ingredients available and is particularly beneficial for sensitive, reactive, and compromised skin.

Can I use Vitamin B5 every day? Yes. It is present in The Isobel Moisturiser, which is formulated for daily morning and evening use.

Does Vitamin B5 help with barrier repair? Yes. Vitamin B5 enhances the skin's natural barrier function and supports the recovery process, making it a key ingredient in The Isobel Moisturiser alongside DermaBiotics, Pumpkin Seed Oil, and Squalane.

Can Vitamin B5 be layered with other actives? Yes. Vitamin B5 is compatible with most skincare ingredients and layers well in both AM and PM routines without any special precautions.

VITAMIN E

Definition Vitamin E, also known as Tocopherol, is a fat-soluble antioxidant naturally found in many plant oils and foods. In skincare, it is used to protect the skin against free radical damage, support barrier function, and enhance the stability and efficacy of other ingredients in a formulation.

Key Skin Benefits

  • Provides antioxidant protection against free radical and environmental damage.
  • Supports and reinforces the skin's moisture barrier.
  • Helps maintain the stability and efficacy of other active ingredients.
  • Nourishes and conditions the skin without heaviness.
  • Suitable for all skin types.

Best For

How to Use Vitamin E is present in The Grace Face Oil. Use as a first cleanse in the evening or as a nourishing finishing oil pressed over your moisturiser before bed.

Layering Advice Apply The Grace Face Oil to dry skin before cleansing as a first cleanse, or press one to two drops over your moisturiser as the final step in your PM routine for added antioxidant and barrier support.

Cautions Vitamin E is well tolerated across most skin types. In rare cases, high concentrations of Vitamin E can cause sensitivity in some individuals. The concentrations used in The Functional Skin's formulations are designed for daily skin comfort and compatibility.

Products That Contain This Ingredient The Grace Face Oil — a multi-purpose face oil formulated with Vitamin E alongside Hemp Seed, Camellia, Rosehip, Avocado, Coffee Seed Oil, and Squalane.

Related Learning Resources Read more about our Dry/Dehydrated collection

FAQs

What does Vitamin E do for the skin? Vitamin E is a fat-soluble antioxidant that helps protect the skin against free radical and environmental damage, supports barrier function, and enhances the stability of other active ingredients in a formulation.

Is Vitamin E suitable for oily skin? Yes. Vitamin E is used in The Grace Face Oil in a non-occlusive, lightweight formulation that is suitable for all skin types including oily and reactive skin.

Does Vitamin E help with barrier repair? Yes. Vitamin E works alongside other barrier-supporting ingredients in The Grace Face Oil to help reinforce the skin's moisture barrier and protect against environmental stressors as part of a consistent routine.

Can I use Vitamin E every day? Yes. It is present in The Grace Face Oil, which is suitable for daily use as a cleansing oil or nourishing overnight treatment.

Is Vitamin E natural? The Vitamin E used in The Functional Skin's formulations is derived from natural plant sources and is part of the brand's commitment to low-tox, synthetic-free ingredient selection.