Define Age-Defying Treatment 45g
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Delivery
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Click & Collect
Free Click and collect is available at checkout. Orders are ready within 1 hour during opening hours. Store Address: 56 Parer Rd, Airport West, VIC Australia 3042 Phone (03) 9999 5902
Cosmedix Define Age-Defying Treatment offers a unique blend of exfoliation and hydration to revitalise the skin's appearance. Especially tailored for those aiming to combat signs of ageing, this creamy treatment methodically resurfaces the skin's outer layer, revealing a smoother texture beneath. With its advanced formulation, the Define not only exfoliates but also ensures that the potent 2% AGP Complex is deeply absorbed into the skin, intensifying its rejuvenating effects.
The treatment addresses multiple ageing signs, from fine lines and wrinkles to skin imperfections, offering a comprehensive solution. Its rich blend of key ingredients ensures skin remains hydrated, achieving an even and supple tone. The AGP Complex, L-Lactic Acid, L-Tartaric Acid, and L-Malic Acid work together to speed up cell turnover, protect against free radicals, and gently exfoliate the skin, which makes it look healthy and young.
How To Use Cosmedix Define Age-Defying Treatment
Night
Apply a small amount to freshly cleansed and toned skin 2-4 times weekly as part of your nightly regimen. Use as tolerated. Follow with a moisturizer if further hydration is needed.
Day
Apply a small amount to freshly cleansed and toned skin 2-4 times weekly as part of your nightly regimen. Use as tolerated. Follow with a moisturizer if further hydration is needed.
Cosmedix Define Age-Defying Treatment Ingredients
Aqua/water/eau, Polysorbate 60, Lactic Acid (L), Isopropyl Myristate, Glyceryl Stearate, Hamamelis Virginiana (Witch Hazel) Water, Stearic Acid, Cetearyl Alcohol, Glycerin, Sodium Hydroxide, Leuconostoc/radish Root Ferment Filtrate, Tartaric Acid (L), Retinyl Acetate, Albumen, Cetyl Alcohol, Benzyl Alcohol, Malic Acid (L), Olea Europaea (Olive) Fruit Oil, Retinol, Pichia/resveratrol Ferment Extract, Resveratrol Dimethyl Ether, Galactoarabinan, Proline (L), Retinyl Palmitate, Citrus Grandis (Grapefruit) Peel Oil, Cananga Odorata (Ylang Ylang) Flower Oil, Bisabolol (L-alpha), Tocopheryl Acetate (D-alpha), Aloe Barbadensis Leaf Juice Powder, Allantoin, Daucus Carota Sativa (Carrot) Root Extract, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Helianthus Annuus (Sunflower) Seed Oil, Chamomilla Recutita (Matricaria) Flower Extract, Tocopherol (D-alpha), Althaea Officinalis (Marshmallow) Root Extract, Alcohol, Citric Acid, Polysorbate 20, Potassium Sorbate, Limonene, Sodium Gluconate, Bha, Behenyl Alcohol, Caprylhydroxamic Acid, Alcohol Denat, Bht, Xanthan Gum, Phenoxyethanol
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Aqua SolventsSolvent
The water base that carries and dissolves the other ingredients in most products.
May suitAll hair and skin types.
Worth knowingAlmost always the first ingredient listed in water-based products.
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Polysorbate 60 Thickeners and stabilisersEmulsifier and solubiliser
Helps blend oil- and water-based ingredients and keep formulas stable.
May suitThose using creams or conditioners that rely on smooth, even textures.
Worth knowingIt is widely used in haircare to ensure consistent texture and to help disperse ingredients evenly. It also offers mild surfactant properties that support product spreadability.
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Lactic Acid pH adjusterspH adjuster
Helps adjust and maintain the product’s pH for optimal performance.
May suitThose looking for formulas that help smooth the cuticle or gently refine the scalp surface.
Worth knowingLactic Acid can also provide mild hydrating and smoothing benefits in haircare. Its pH-balancing role helps support product stability and performance.
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Isopropyl Myristate Conditioning agentsEmollient and texture enhancer
Helps soften hair and improve slip by adding light, non-greasy conditioning.
May suitThose looking for smoother-feeling hair or products that apply and spread easily.
Worth knowingIt is a lightweight ester often used to reduce greasiness and enhance the feel of conditioning formulas. It can also support fragrance and oil distribution within a product.
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Glyceryl Stearate Thickeners and stabilisersEmulsifier and texture enhancer
Helps blend oil and water and gives haircare formulas a smooth, creamy texture.
May suitThose who like richer conditioners or masks that feel smooth and spread easily.
Worth knowingIt also offers light conditioning and can help soften the feel of hair. It is widely used in both skincare and haircare for its reliable stabilising properties.
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Hamamelis Virginiana (Witch Hazel) Water Botanical extractsSoothing plant extract
A plant-derived water used to soothe the scalp and provide a mild astringent effect.
May suitThose looking for calming or refreshing scalp care benefits.
Worth knowingWitch hazel water is commonly included in hair and scalp formulas for its gentle toning properties. It can complement other scalp-balancing ingredients.
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Stearic Acid Thickeners and stabilisersThickener and stabiliser
A fatty acid that helps thicken and stabilise formulations while adding a soft, conditioned feel.
May suitThose who prefer richer, creamier textures in conditioners and styling products.
Worth knowingIt is commonly used to give products structure and improve spreadability. It can be derived from plant or animal sources, with most haircare brands typically using plant-based forms.
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Cetearyl Alcohol Conditioning agentsFatty alcohol conditioner
A fatty alcohol that helps soften hair and improve the texture of formulations.
May suitPeople looking for smoother, more manageable hair or richer, creamier product textures.
Worth knowingDespite the name, fatty alcohols are moisturising and conditioning rather than drying. They also help stabilise and thicken many haircare formulas.
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Glycerin HumectantsHumectant
Attracts and holds water to help hair feel hydrated and soft.
May suitDry or dehydrated hair, and many curl and moisture routines.
Worth knowingA very common, well-tolerated humectant used across countless products.
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Sodium Hydroxide pH adjusterspH adjuster
Helps control and stabilise the pH of haircare formulations.
May suitThose interested in how product pH affects scalp comfort or hair cuticle behaviour.
Worth knowingIt is used in very small amounts to bring a formula to the desired pH range. Once adjusted, it does not act as a strong alkaline agent in the finished product.
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Leuconostoc/Radish Root Ferment Filtrate PreservativesNatural preservative
A fermented radish root filtrate used to help keep formulations fresh and stable.
May suitThose interested in products that use fermentation-derived preservation systems.
Worth knowingIt provides mild antimicrobial activity and is commonly used in modern, gentle preservation blends. Its use does not change how the product performs on the hair.
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Tartaric Acid pH adjusterspH adjuster
Helps regulate the pH of haircare formulas for stability and performance.
May suitThose interested in balanced, salon-grade formulations that rely on controlled pH.
Worth knowingAs an alpha hydroxy acid, it is primarily used in haircare for its ability to fine‑tune pH rather than for exfoliation. It supports product consistency and ensures other ingredients work as intended.
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Cetyl Alcohol Conditioning agentsEmollient and texture enhancer
Cetyl Alcohol helps soften the hair and gives products a smooth, creamy texture.
May suitThose looking for conditioning, slip, or richer textures in their haircare products.
Worth knowingDespite the name, fatty alcohols like cetyl alcohol are non‑drying and are commonly used to add emollience and stability to formulations.
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Benzyl Alcohol PreservativesPreservative
Helps preserve formulations and can also act as a solvent or light fragrance component.
May suitThose interested in understanding preservative systems or identifying potential fragrance allergens.
Worth knowingBenzyl Alcohol is commonly used in professional haircare to support product stability and texture. It can also naturally occur in some essential oils.
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Malic Acid pH adjusterspH adjuster
Helps adjust and maintain the pH balance of haircare formulas.
May suitThose interested in products formulated to support cuticle smoothness through balanced pH.
Worth knowingMalic Acid is an alpha hydroxy acid that can also contribute mild chelating or exfoliating benefits depending on the formula. In haircare it is primarily included at low levels to help stabilise products and support their intended performance.
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Olea Europaea (Olive) Fruit Oil Oils and buttersNourishing oil
A plant-derived oil that helps smooth, soften and condition the hair.
May suitThose looking to add softness, shine or protection to dry or coarse hair.
Worth knowingIt is rich in fatty acids that help reduce moisture loss and improve manageability. Often used in both leave-in and rinse-off formulas for added nourishment.
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Retinol Anti-dandruff / scalp careVitamin A derivative
Retinol is a form of vitamin A used in some scalp‑care formulas to support healthy skin renewal.
May suitPeople interested in targeted scalp treatments or products aimed at improving scalp texture and turnover.
Worth knowingRetinol is more common in skincare than haircare, but small amounts may be included in specialised scalp products. It is typically formulated at low levels to help maintain comfort and balance.
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Galactoarabinan Thickeners and stabilisersFilm-forming polymer
A plant-derived polysaccharide that helps improve product texture and forms a light film on hair.
May suitThose looking for smoother-feeling hair or lightweight conditioning without heaviness.
Worth knowingIt is commonly sourced from larch trees and is valued for its ability to enhance spreadability and reduce moisture loss. Its lightweight film can support smoother styling.
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Proline Proteins and amino acidsAmino acid conditioner
An amino acid that helps support hair feel, softness and overall conditioning.
May suitThose looking for formulas that help improve hair manageability or support lightly replenishing treatments.
Worth knowingAmino acids like proline are often included in small amounts to complement conditioning systems and support the hair’s natural protein structure.
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Retinyl Palmitate Conditioning agentsVitamin-derived conditioning agent
A vitamin A ester used to support conditioning and overall hair and scalp care.
May suitThose looking for formulations enriched with vitamin-derived ingredients for scalp comfort or hair vitality.
Worth knowingIt is commonly included in small amounts to help support the conditioning profile of a formula. Its role in haircare is typically supportive rather than transformative.
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Citrus Grandis (Grapefruit) Peel Oil Fragrance ingredientsFragrance oil
Provides a fresh citrus scent and light aromatic qualities in haircare products.
May suitThose who enjoy naturally derived citrus fragrances in their haircare routine.
Worth knowingAs a citrus essential oil, it is mainly used for its aroma and may also offer a refreshing sensory experience. Like many essential oils, it is used in small amounts within balanced formulas.
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Cananga Odorata Flower Oil Fragrance ingredientsFragrance oil
A natural essential oil used to add a floral scent and light aromatic benefits to haircare products.
May suitThose who enjoy botanical fragrances in their hair products.
Worth knowingAs an essential oil, it may also contribute light conditioning or soothing properties depending on the formulation. Its scent can vary in intensity based on the grade and extraction method.
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Bisabolol Botanical extractsSoothing botanical component
Bisabolol is a calming component often used to help soothe the scalp and support comfortable wear of hair products.
May suitThose with a sensitive or easily irritated scalp may appreciate its calming properties.
Worth knowingIt is commonly derived from chamomile or produced synthetically with similar benefits. It is widely used in both skincare and haircare for its gentle, comforting profile.
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Tocopheryl Acetate Conditioning agentsAntioxidant and conditioning support
A stable form of vitamin E used to help condition hair and support product stability.
May suitThose looking for added conditioning support or antioxidant benefits in their haircare.
Worth knowingIt is commonly used because it is more stable than pure vitamin E while still offering similar benefits. It appears in many leave-in and rinse-off formulations.
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Aloe Barbadensis Leaf Juice Powder Botanical extractsSoothing botanical extract
A powdered form of aloe that helps hydrate and soothe the hair and scalp.
May suitThose looking for gentle hydration or scalp comfort.
Worth knowingAloe extracts are widely used in haircare for their lightweight conditioning and calming feel. The powdered form is simply a concentrated version that is rehydrated during formulation.
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Allantoin Conditioning agentsScalp‑soothing conditioner
Allantoin helps soothe the scalp and condition the hair and skin.
May suitThose with a sensitive or easily irritated scalp may appreciate its calming effect.
Worth knowingIt is widely used in personal care for its comforting feel and compatibility with many formulas. In haircare, it supports a smoother, more comfortable scalp experience.
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Daucus Carota Sativa (Carrot) Root Extract Botanical extractsBotanical extract
A plant extract used to help condition and support the feel of the hair and scalp.
May suitThose looking for plant-derived ingredients or products with added antioxidant benefits.
Worth knowingCarrot root extract is often valued for its naturally occurring vitamins and antioxidants, which can complement conditioning formulas. Its exact benefits vary depending on the concentration and overall product formulation.
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Prunus Amygdalus Dulcis Oil Oils and buttersNourishing plant oil
A lightweight plant oil that helps condition and soften the hair.
May suitThose seeking added softness, shine, or help with dry or coarse hair.
Worth knowingIt is commonly used in haircare for its smooth, silky feel and its ability to support moisture retention. It is generally well tolerated by most hair types.
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Helianthus Annuus (Sunflower) Seed Oil Oils and buttersEmollient oil
A plant-derived oil that helps soften and condition the hair and scalp.
May suitThose seeking lightweight natural oils for moisture, shine or scalp comfort.
Worth knowingIt is rich in fatty acids that support hair softness without feeling overly heavy. Often used as a carrier oil in both rinse-off and leave-in formulas.
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Chamomilla Recutita (Matricaria) Flower Extract Botanical extractsSoothing botanical extract
A plant extract used to help soothe and condition the scalp and hair.
May suitThose seeking gentle, plant-derived ingredients for scalp comfort or lightweight conditioning benefits.
Worth knowingChamomile extracts are common in both skincare and haircare for their calming properties and light conditioning effect. They can also contribute to a soft, natural feel in formulations.
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Tocopherol PreservativesAntioxidant
An antioxidant that helps support product stability and can provide conditioning benefits to hair.
May suitThose wanting added nourishment or antioxidant support in their haircare routine.
Worth knowingTocopherol is commonly included to help protect oils in a formula from oxidising and to offer light conditioning benefits. It is widely used in both skincare and haircare products.
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Althaea Officinalis Root Extract Botanical extractsSoothing botanical extract
A plant extract used to soothe the scalp and help condition the hair.
May suitThose looking for gentle, plant-derived ingredients that support scalp comfort and light conditioning.
Worth knowingMarshmallow root extract is valued for its naturally softening and calming qualities in hair and scalp products.
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Alcohol SolventsSolvent and drying agent
Helps dissolve other ingredients and can aid quick drying in styling products.
May suitThose using sprays or styling products that benefit from fast evaporation.
Worth knowingIn haircare, this typically refers to ethanol or denatured alcohol, which helps formulas feel lighter and dry faster. Its effect depends on the overall product balance and supporting conditioning ingredients.
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Citric Acid pH adjusterspH adjuster
Fine-tunes the product pH, which can help the hair surface feel smooth.
May suitMost hair types as part of a balanced formula.
Worth knowingUsually present in small amounts to balance the formula.
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Polysorbate 20 Thickeners and stabilisersSolubiliser / emulsifier
Helps blend oil‑based ingredients into water‑based formulas for a smooth, even texture.
May suitThose using products with essential oils or fragranced blends, as it helps disperse these evenly.
Worth knowingIt is widely used as a gentle solubiliser in both leave‑in and rinse‑off products. Its presence can improve product consistency and prevent ingredient separation.
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Potassium Sorbate PreservativesPreservative
Helps keep haircare formulas stable by preventing the growth of microbes.
May suitAnyone who uses water-based products that benefit from reliable preservation.
Worth knowingIt is commonly used alongside other preservation systems to maintain product freshness and extend shelf life. It is generally well tolerated in rinse-off and leave-in products.
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Limonene Fragrance ingredientsFragrance component
A fragrance component that also occurs naturally in many citrus and plant oils.
Worth knowingA fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.
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Sodium Gluconate Chelating agentsChelating agent
Helps bind metal ions in water and formulas to support stability and performance.
May suitThose living in hard-water areas or using products designed to maintain formula clarity and effectiveness.
Worth knowingBy binding minerals, it can help reduce the impact of hard water on hair feel and product behaviour. It is commonly used in modern, mild formulations.
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Behenyl Alcohol Conditioning agentsFatty alcohol conditioner
A long‑chain fatty alcohol that helps soften hair and improve product texture.
May suitPeople looking for smoother-feeling hair or richer, more conditioning formulas.
Worth knowingDespite the name, fatty alcohols like behenyl alcohol are quite different from drying alcohols and are commonly used to add slip and creaminess to haircare products. They can also support the stability and thickness of conditioners and masks.
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Caprylhydroxamic Acid PreservativesPreservative booster
Helps support a product’s preservation system by inhibiting microbial growth.
May suitThose interested in formulas that use alternative preservative systems.
Worth knowingIt is often paired with gentle humectants to create broad-spectrum preservation. Its presence helps maintain product freshness and stability over time.
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Alcohol Denat. SolventsSolvent
A fast-evaporating solvent that helps dissolve ingredients and improve product dry time.
May suitPeople who use styling products that benefit from quick drying or a lightweight feel.
Worth knowingIts quick evaporation can help reduce residue and support a clean finish in styling formulas. Some may notice it can feel slightly drying in leave-in products depending on hair type.
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BHT PreservativesAntioxidant
BHT acts as an antioxidant that helps keep formulas stable over time.
May suitAnyone using products that benefit from extended shelf life and maintained performance.
Worth knowingIt helps protect oils and other sensitive ingredients from breaking down when exposed to air and light. It is used in very small amounts to support product consistency.
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Xanthan Gum Thickeners and stabilisersThickener and stabiliser
Xanthan Gum helps thicken and stabilise haircare formulas for a smooth, consistent texture.
May suitPeople who prefer products with a richer or more gel-like texture.
Worth knowingIt is a polysaccharide widely used in cosmetics to keep formulas uniform and easy to apply. It works well alongside many other common ingredients.
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Phenoxyethanol PreservativesPreservative
Helps keep the product stable and pleasant to use after opening.
May suitAll products that need protecting from spoilage.
Worth knowingA very common, well-studied preservative used at low levels.