The Vitamin C 23 Serum 20ml
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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
Elevate your skincare regime with COSRX The Vitamin C 23 Serum, a potent blend designed to breathe new life into your complexion. This serum boasts a remarkable 23% concentration of pure vitamin C, targeting acne scars, dullness, and hyperpigmentation with precision. Its powerful formula not only fades away blemishes but also inhibits melanin synthesis, ensuring a clearer, more luminous skin tone.
Enriched with vitamin E, this serum enhances the efficacy of vitamin C, offering a synergistic effect that significantly reduces the appearance of fine lines and wrinkles. The watery texture of the serum, combined with hyaluronic acid and allantoin, ensures deep hydration while soothing the skin, making it suitable for even the most sensitive skin types. This non-irritating formula revitalizes and hydrates, leaving your skin glowing, rejuvenated, and visibly smoother.
How To Use COSRX The Vitamin C 23 Serum
Shake the bottle lightly once or twice from side to side and apply a few drops to the skin.
COSRX The Vitamin C 23 Serum Ingredients
Water, Ascorbic Acid(23%), Propanediol, Dimethicone, Tromethamine, Panthenol, Ethyl Ascorbyl Ether, Squalane, Caffeine, Sodium Chloride, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Butylene Glycol, Arginine, Niacinamide, Pentylene Glycol, Alcohol Denat., Helianthus Annuus (Sunflower) Seed Oil, Glycyrrhiza Glabra (Licorice) Root Extract, Methyl Trimethicone, Carthamus Tinctorius (Safflower) Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Beta-Carotene
Occasionally, product packaging and ingredients are updated without notice. For the most accurate information please check the product packaging.
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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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Ascorbic Acid pH adjusterspH adjuster / antioxidant
Ascorbic Acid is a form of vitamin C used to help adjust pH and support formula stability.
May suitPeople using clarifying or colour-care products may appreciate its ability to support brightness and maintain product performance.
Worth knowingIt can also function as an antioxidant, helping protect formulas from oxidation. Its presence does not typically affect how a product feels or performs on the hair.
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Propanediol HumectantsHydrating humectant
Helps attract and hold moisture in hair and supports a smooth, conditioned feel.
May suitThose wanting lightweight hydration without heaviness.
Worth knowingIt is often used as a gentle alternative to glycol-based humectants and can also help improve product texture and absorption.
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Dimethicone SiliconesSlip and shine agent
Smooths the hair surface, adds slip and shine and helps reduce frizz.
May suitFrizz-prone, coarse or dry hair wanting a smooth, glossy finish.
Worth knowingSome people prefer silicone-free formulas, especially for certain curl routines. It is widely used and helpful in many smoothing products.
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Tromethamine pH adjusterspH adjuster
Helps maintain a stable and comfortable pH level in haircare formulas.
May suitAnyone using products that rely on precise pH for performance or scalp comfort.
Worth knowingIt is commonly used to fine‑tune the pH of gels, creams and serums so they remain effective and feel pleasant on the skin or scalp. Its presence does not affect the texture or finish of the final product for most users.
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Panthenol Conditioning agentsConditioning agent
Helps condition, soften and add a smooth, healthy feel to the hair.
May suitMost hair types, especially dry or dull hair.
Worth knowingA versatile, well-tolerated conditioning ingredient.
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Squalane Oils and buttersLightweight emollient
Squalane is a lightweight emollient that helps smooth and soften the hair.
May suitThose seeking added softness, shine and frizz control without a heavy or greasy feel.
Worth knowingIt is often derived from plant sources such as sugarcane and is valued for its stability and non-greasy texture. It is suitable for most hair types, including fine hair, due to its lightness.
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Caffeine Anti-dandruff / scalp careScalp-support ingredient
Caffeine is used in haircare to help support scalp vitality and create an energised feel.
May suitPeople interested in scalp-focused formulas or products aimed at maintaining the appearance of fuller, energised hair.
Worth knowingIt is often included in shampoos, tonics and leave‑ins to complement other scalp-care ingredients. Its effects are generally most noticeable when used consistently.
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Sodium Chloride Thickeners and stabilisersViscosity adjuster
Sodium Chloride is used to adjust the thickness of shampoos and other cleansing formulas.
May suitThose interested in how a product’s texture and lather are achieved.
Worth knowingIt is a simple mineral salt that helps create a familiar shampoo feel and can influence how a cleanser spreads through the hair.
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Sodium Hyaluronate HumectantsHydrating humectant
Draws moisture into the hair and helps maintain hydration.
May suitThose with dry, dehydrated or coarse hair seeking added softness and moisture retention.
Worth knowingIt is the salt form of hyaluronic acid and is widely used because it can hold many times its weight in water. In haircare, it helps support smoother, more manageable strands without adding heaviness.
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Sodium Sulfite PreservativesAntioxidant / stabiliser
Helps protect formulas by reducing oxidation and maintaining product stability.
May suitThose interested in ingredient lists for sensitivity reasons or who like understanding how products stay stable.
Worth knowingIt functions as a reducing agent, supporting the long-term quality of a formula. It is not usually included for direct hair benefits but for product integrity.
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Disodium EDTA Chelating agentsChelating agent
Binds to minerals from hard water so the product works consistently and stays stable.
May suitAll products, especially in hard-water areas.
Worth knowingUsed in tiny amounts to keep formulas performing reliably.
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Glutathione Proteins and amino acidsAntioxidant
Acts as an antioxidant that helps support the stability and appearance of haircare formulations.
May suitPeople interested in antioxidant-rich or protective hair treatments.
Worth knowingGlutathione is a tripeptide naturally present in the body and is used in cosmetics for its supportive antioxidant properties. In haircare, it is typically included in small amounts to help maintain formula quality.
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Adenosine Anti-dandruff / scalp careScalp care ingredient
Adenosine is used in hair and scalp products to help support a healthy scalp environment.
May suitPeople looking for scalp‑care formulas or products aimed at supporting fuller‑looking hair.
Worth knowingIt is often included in leave‑on treatments where it can sit on the scalp for longer contact time. Research has explored its role in supporting the appearance of thicker, denser hair.
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Acetyl Glucosamine HumectantsHydrating humectant
Helps attract and retain moisture to support softer, smoother-feeling hair.
May suitThose seeking hydration, improved softness or enhanced manageability.
Worth knowingIt is a derivative of glucosamine often used in skincare and can also support moisture balance in hair products.
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Gardenia Florida Fruit Extract Botanical extractsBotanical extract
A plant-derived extract used for its conditioning and soothing properties.
May suitThose looking for botanical ingredients that support hair softness and overall conditioning.
Worth knowingBotanical extracts like this one are often included to complement a formula with plant-based benefits or natural positioning. Its specific effects can vary depending on concentration and the overall 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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Dextrin Thickeners and stabilisersFilm-former / texture enhancer
Dextrin helps improve product texture and can provide light hold or structure to hair.
May suitPeople looking for gentle styling support or added volume without a heavy feel.
Worth knowingDextrin is a carbohydrate-based ingredient commonly derived from starch and is widely used for its versatile thickening and film-forming qualities.
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Tocotrienols Oils and buttersAntioxidant
Tocotrienols are vitamin E compounds that help protect hair and scalp from environmental stressors.
May suitPeople interested in antioxidant support or maintaining hair and scalp condition.
Worth knowingTocotrienols are naturally present in certain plant oils and are valued for their stability and protective properties in cosmetic formulas. They are typically used in small amounts to enhance formula resilience and support hair feel.
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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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Elaeis Guineensis (Palm) Oil Oils and buttersNourishing plant oil
A rich plant oil that helps condition and soften the hair.
May suitThose looking for added smoothness, shine and nourishment in dry or coarse hair.
Worth knowingPalm-derived oils are commonly used in haircare for their emollient properties and ability to support a smooth, manageable feel.
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Butylene Glycol HumectantsHumectant and solvent
Butylene Glycol helps attract and hold moisture while improving the spreadability of hair products.
May suitThose looking for hydrated, smoother-feeling hair or lighter-feeling formulations.
Worth knowingIt is commonly used to help ingredients dissolve and to give formulas a soft, glide-on texture. It appears in many leave-in and rinse-off products due to its versatility.
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Arginine Proteins and amino acidsAmino acid
An amino acid used to support hair strength and maintain moisture balance.
May suitThose looking for formulas that help with hair resilience or hydration.
Worth knowingArginine is naturally present in the hair’s keratin structure and is commonly added to strengthening or repairing products. It is also used in some formulations to help support scalp comfort.
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Niacinamide Anti-dandruff / scalp careScalp-supporting vitamin
Niacinamide is a form of vitamin B3 that helps support a balanced scalp environment and improve hair resilience.
May suitThose looking to support scalp comfort, strengthen hair, or maintain a healthy-looking scalp barrier.
Worth knowingIt is commonly used in both skincare and haircare for its soothing and barrier-supporting properties. It pairs well with many other ingredients and is generally well tolerated.
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Pentylene Glycol HumectantsHumectant and solvent
Helps attract and hold moisture while also improving the spreadability of a formula.
May suitThose seeking lightweight hydration without heaviness.
Worth knowingIt also supports product texture and can enhance the performance of other ingredients in a formula.
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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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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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Glycyrrhiza Glabra Root Extract Botanical extractsSoothing botanical extract
A plant extract used for its soothing and calming properties on the scalp.
May suitThose looking to support a comfortable scalp or reduce the feeling of irritation.
Worth knowingIt is commonly included in scalp‑focused formulas for its naturally calming profile. As with most botanical extracts, its exact benefits can vary depending on concentration and formulation.
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Carthamus Tinctorius (Safflower) Seed Oil Oils and buttersLightweight plant oil
A lightweight botanical oil that helps condition and soften the hair.
May suitThose wanting smoother, more manageable hair without a heavy or greasy feel.
Worth knowingSafflower seed oil is rich in linoleic acid, which can support softness and shine. It is commonly used in both hair and skin formulations due to its light texture.
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Camellia Japonica Seed Oil Oils and buttersNourishing plant oil
A lightweight botanical oil that helps smooth, soften and condition the hair.
May suitThose seeking softness, shine and frizz control without a heavy feel.
Worth knowingIt is rich in fatty acids that help support a smooth, conditioned hair surface. Often used in both rinse-off and leave-in formulas for added shine.
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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.