COSRX The Vitamin C 23 Serum
COSRX The Vitamin C 23 Serum
COSRX The Vitamin C 23 Serum
COSRX The Vitamin C 23 Serum
COSRX The Vitamin C 23 Serum
COSRX

The Vitamin C 23 Serum 20ml

$52.00
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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

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Why You’ll love it
All Skin Types
Acne & Breakouts
Dehydrated Skin
Wrinkles & Loss of Firmness
Boasts 23% pure vitamin C for maximum brightness
Gentle, non-irritating formula for sensitive skin
Hydrates and revitalizes for a youthful complexion
Targets and fades acne scars and hyperpigmentation
Description
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Directions
Ingredients
  • Aqua Solvents
    Solvent

    The water base that carries and dissolves the other ingredients in most products.

    May suit

    All hair and skin types.

    Worth knowing

    Almost always the first ingredient listed in water-based products.

  • Ascorbic Acid pH adjusters
    pH adjuster / antioxidant

    Ascorbic Acid is a form of vitamin C used to help adjust pH and support formula stability.

    May suit

    People using clarifying or colour-care products may appreciate its ability to support brightness and maintain product performance.

    Worth knowing

    It 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.

  • Propanediol Humectants
    Hydrating humectant

    Helps attract and hold moisture in hair and supports a smooth, conditioned feel.

    May suit

    Those wanting lightweight hydration without heaviness.

    Worth knowing

    It is often used as a gentle alternative to glycol-based humectants and can also help improve product texture and absorption.

  • Dimethicone Silicones
    Slip and shine agent

    Smooths the hair surface, adds slip and shine and helps reduce frizz.

    May suit

    Frizz-prone, coarse or dry hair wanting a smooth, glossy finish.

    Worth knowing

    Some people prefer silicone-free formulas, especially for certain curl routines. It is widely used and helpful in many smoothing products.

  • Tromethamine pH adjusters
    pH adjuster

    Helps maintain a stable and comfortable pH level in haircare formulas.

    May suit

    Anyone using products that rely on precise pH for performance or scalp comfort.

    Worth knowing

    It 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.

  • Panthenol Conditioning agents
    Conditioning agent

    Helps condition, soften and add a smooth, healthy feel to the hair.

    May suit

    Most hair types, especially dry or dull hair.

    Worth knowing

    A versatile, well-tolerated conditioning ingredient.

  • Squalane Oils and butters
    Lightweight emollient

    Squalane is a lightweight emollient that helps smooth and soften the hair.

    May suit

    Those seeking added softness, shine and frizz control without a heavy or greasy feel.

    Worth knowing

    It 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.

  • Caffeine Anti-dandruff / scalp care
    Scalp-support ingredient

    Caffeine is used in haircare to help support scalp vitality and create an energised feel.

    May suit

    People interested in scalp-focused formulas or products aimed at maintaining the appearance of fuller, energised hair.

    Worth knowing

    It is often included in shampoos, tonics and leave‑ins to complement other scalp-care ingredients. Its effects are generally most noticeable when used consistently.

  • Sodium Chloride Thickeners and stabilisers
    Viscosity adjuster

    Sodium Chloride is used to adjust the thickness of shampoos and other cleansing formulas.

    May suit

    Those interested in how a product’s texture and lather are achieved.

    Worth knowing

    It is a simple mineral salt that helps create a familiar shampoo feel and can influence how a cleanser spreads through the hair.

  • Sodium Hyaluronate Humectants
    Hydrating humectant

    Draws moisture into the hair and helps maintain hydration.

    May suit

    Those with dry, dehydrated or coarse hair seeking added softness and moisture retention.

    Worth knowing

    It 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.

  • Sodium Sulfite Preservatives
    Antioxidant / stabiliser

    Helps protect formulas by reducing oxidation and maintaining product stability.

    May suit

    Those interested in ingredient lists for sensitivity reasons or who like understanding how products stay stable.

    Worth knowing

    It 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.

  • Disodium EDTA Chelating agents
    Chelating agent

    Binds to minerals from hard water so the product works consistently and stays stable.

    May suit

    All products, especially in hard-water areas.

    Worth knowing

    Used in tiny amounts to keep formulas performing reliably.

  • Glutathione Proteins and amino acids
    Antioxidant

    Acts as an antioxidant that helps support the stability and appearance of haircare formulations.

    May suit

    People interested in antioxidant-rich or protective hair treatments.

    Worth knowing

    Glutathione 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.

  • Adenosine Anti-dandruff / scalp care
    Scalp care ingredient

    Adenosine is used in hair and scalp products to help support a healthy scalp environment.

    May suit

    People looking for scalp‑care formulas or products aimed at supporting fuller‑looking hair.

    Worth knowing

    It 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.

  • Acetyl Glucosamine Humectants
    Hydrating humectant

    Helps attract and retain moisture to support softer, smoother-feeling hair.

    May suit

    Those seeking hydration, improved softness or enhanced manageability.

    Worth knowing

    It is a derivative of glucosamine often used in skincare and can also support moisture balance in hair products.

  • Gardenia Florida Fruit Extract Botanical extracts
    Botanical extract

    A plant-derived extract used for its conditioning and soothing properties.

    May suit

    Those looking for botanical ingredients that support hair softness and overall conditioning.

    Worth knowing

    Botanical 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.

  • Allantoin Conditioning agents
    Scalp‑soothing conditioner

    Allantoin helps soothe the scalp and condition the hair and skin.

    May suit

    Those with a sensitive or easily irritated scalp may appreciate its calming effect.

    Worth knowing

    It 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.

  • Dextrin Thickeners and stabilisers
    Film-former / texture enhancer

    Dextrin helps improve product texture and can provide light hold or structure to hair.

    May suit

    People looking for gentle styling support or added volume without a heavy feel.

    Worth knowing

    Dextrin is a carbohydrate-based ingredient commonly derived from starch and is widely used for its versatile thickening and film-forming qualities.

  • Tocotrienols Oils and butters
    Antioxidant

    Tocotrienols are vitamin E compounds that help protect hair and scalp from environmental stressors.

    May suit

    People interested in antioxidant support or maintaining hair and scalp condition.

    Worth knowing

    Tocotrienols 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.

  • Tocopherol Preservatives
    Antioxidant

    An antioxidant that helps support product stability and can provide conditioning benefits to hair.

    May suit

    Those wanting added nourishment or antioxidant support in their haircare routine.

    Worth knowing

    Tocopherol 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.

  • Elaeis Guineensis (Palm) Oil Oils and butters
    Nourishing plant oil

    A rich plant oil that helps condition and soften the hair.

    May suit

    Those looking for added smoothness, shine and nourishment in dry or coarse hair.

    Worth knowing

    Palm-derived oils are commonly used in haircare for their emollient properties and ability to support a smooth, manageable feel.

  • Butylene Glycol Humectants
    Humectant and solvent

    Butylene Glycol helps attract and hold moisture while improving the spreadability of hair products.

    May suit

    Those looking for hydrated, smoother-feeling hair or lighter-feeling formulations.

    Worth knowing

    It 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.

  • Arginine Proteins and amino acids
    Amino acid

    An amino acid used to support hair strength and maintain moisture balance.

    May suit

    Those looking for formulas that help with hair resilience or hydration.

    Worth knowing

    Arginine 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.

  • Niacinamide Anti-dandruff / scalp care
    Scalp-supporting vitamin

    Niacinamide is a form of vitamin B3 that helps support a balanced scalp environment and improve hair resilience.

    May suit

    Those looking to support scalp comfort, strengthen hair, or maintain a healthy-looking scalp barrier.

    Worth knowing

    It 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.

  • Pentylene Glycol Humectants
    Humectant and solvent

    Helps attract and hold moisture while also improving the spreadability of a formula.

    May suit

    Those seeking lightweight hydration without heaviness.

    Worth knowing

    It also supports product texture and can enhance the performance of other ingredients in a formula.

  • Alcohol Denat. Solvents
    Solvent

    A fast-evaporating solvent that helps dissolve ingredients and improve product dry time.

    May suit

    People who use styling products that benefit from quick drying or a lightweight feel.

    Worth knowing

    Its 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.

  • Helianthus Annuus (Sunflower) Seed Oil Oils and butters
    Emollient oil

    A plant-derived oil that helps soften and condition the hair and scalp.

    May suit

    Those seeking lightweight natural oils for moisture, shine or scalp comfort.

    Worth knowing

    It 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.

  • Glycyrrhiza Glabra Root Extract Botanical extracts
    Soothing botanical extract

    A plant extract used for its soothing and calming properties on the scalp.

    May suit

    Those looking to support a comfortable scalp or reduce the feeling of irritation.

    Worth knowing

    It 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.

  • Carthamus Tinctorius (Safflower) Seed Oil Oils and butters
    Lightweight plant oil

    A lightweight botanical oil that helps condition and soften the hair.

    May suit

    Those wanting smoother, more manageable hair without a heavy or greasy feel.

    Worth knowing

    Safflower 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.

  • Camellia Japonica Seed Oil Oils and butters
    Nourishing plant oil

    A lightweight botanical oil that helps smooth, soften and condition the hair.

    May suit

    Those seeking softness, shine and frizz control without a heavy feel.

    Worth knowing

    It 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.

  • Daucus Carota Sativa (Carrot) Root Extract Botanical extracts
    Botanical extract

    A plant extract used to help condition and support the feel of the hair and scalp.

    May suit

    Those looking for plant-derived ingredients or products with added antioxidant benefits.

    Worth knowing

    Carrot 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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