{"product_id":"cosrx-the-vitamin-c-23-serum-20ml","title":"COSRX The Vitamin C 23 Serum 20ml","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eA high-strength vitamin C serum formulated with 23% pure ascorbic acid for practitioners wanting intensive care for visible dark spots, post-blemish marks, dullness and uneven-looking skin tone.\u003c\/p\u003e\u003cp\u003eUnlike gentler vitamin C derivative formulas, this serum uses a high concentration of pure vitamin C, supported by tocotrienols and tocopherol (vitamin E), glutathione, niacinamide, 3-O-ethyl ascorbic acid, panthenol, sodium hyaluronate, squalane and allantoin.\u003c\/p\u003e\u003cp\u003eWithin the Glass Ritual Pigmentation Collection, this sits firmly in the advanced targeted-treatment category rather than being an introductory brightening serum.\u003c\/p\u003e\u003ch2\u003eWhy We Chose It\u003c\/h2\u003e\u003cp\u003eWe chose the COSRX Advanced The Vitamin C 23 Serum because the Pigmentation Collection should provide different treatment strengths rather than pretending every practitioner needs the same formula.\u003c\/p\u003e\u003cp\u003eAt 23% pure ascorbic acid, this is one of the more intensive vitamin C options in the collection.\u003c\/p\u003e\u003cp\u003eThe formula doesn't rely on vitamin C alone. It combines pure ascorbic acid with 3-O-ethyl ascorbic acid, tocotrienols, tocopherol, glutathione and niacinamide, creating a broader antioxidant and tone-supporting system.\u003c\/p\u003e\u003cp\u003ePanthenol, sodium hyaluronate, squalane and allantoin provide additional hydration and skin-conditioning support.\u003c\/p\u003e\u003cp\u003eWe position this serum for practitioners who are already comfortable with active skincare and intentionally want a high-strength vitamin C treatment, rather than automatically recommending it to everyone concerned about pigmentation.\u003c\/p\u003e\u003ch2\u003eBenefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eContains 23% pure vitamin C\u003c\/li\u003e\n\u003cli\u003eHelps improve the appearance of dark spots\u003c\/li\u003e\n\u003cli\u003eSupports a brighter, more even-looking complexion\u003c\/li\u003e\n\u003cli\u003eHelps address post-blemish marks\u003c\/li\u003e\n\u003cli\u003eProvides strong antioxidant support\u003c\/li\u003e\n\u003cli\u003eHelps improve the appearance of dullness\u003c\/li\u003e\n\u003cli\u003eContains both pure ascorbic acid and a vitamin C derivative\u003c\/li\u003e\n\u003cli\u003eTocotrienols and tocopherol provide additional antioxidant support\u003c\/li\u003e\n\u003cli\u003eGlutathione complements the antioxidant system\u003c\/li\u003e\n\u003cli\u003eNiacinamide provides additional tone and barrier support\u003c\/li\u003e\n\u003cli\u003eSodium hyaluronate supports hydration\u003c\/li\u003e\n\u003cli\u003ePanthenol and allantoin provide skin-conditioning support\u003c\/li\u003e\n\u003cli\u003eSqualane provides lightweight emollient care\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eConsider this serum if you are concerned about:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePersistent-looking dark spots\u003c\/li\u003e\n\u003cli\u003ePost-blemish marks\u003c\/li\u003e\n\u003cli\u003eUneven-looking skin tone\u003c\/li\u003e\n\u003cli\u003eDullness\u003c\/li\u003e\n\u003cli\u003eLoss of radiance\u003c\/li\u003e\n\u003cli\u003eWanting a high-strength vitamin C treatment\u003c\/li\u003e\n\u003cli\u003eAlready having experience using active skincare\u003c\/li\u003e\n\u003cli\u003eWanting a more intensive option than a vitamin C derivative serum\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis would not be our automatic starting recommendation for highly sensitive skin or someone completely new to vitamin C.\u003c\/p\u003e\u003ch2\u003eHow to Use\u003c\/h2\u003e\u003cp\u003eAfter cleansing and toning, apply approximately 2–3 drops over the face.\u003c\/p\u003e\u003cp\u003eGently pat until absorbed.\u003c\/p\u003e\u003cp\u003eFollow with moisturiser.\u003c\/p\u003e\u003cp\u003eWhen used during the daytime, follow with appropriate sun protection.\u003c\/p\u003e\u003cp\u003eBecause this is a high-concentration vitamin C treatment, introduce it gradually and observe how your skin responds before increasing frequency.\u003c\/p\u003e\u003ch2\u003eRitual Position\u003c\/h2\u003e\u003cp\u003eCleanse → Tone → COSRX Vitamin C 23 Serum → Moisturise\u003c\/p\u003e\u003cp\u003eThis occupies the advanced targeted-treatment stage of the Glass Ritual.\u003c\/p\u003e\u003ch2\u003eGlass Ritual Pairing\u003c\/h2\u003e\u003cp\u003eThis serum does not need to be layered with every other pigmentation treatment in the collection.\u003c\/p\u003e\u003cp\u003eA deliberate routine may simply be:\u003c\/p\u003e\u003cp\u003eGentle Cleanser → Hydrating Toner → COSRX Vitamin C 23 Serum → Barrier-Supportive Moisturiser\u003c\/p\u003e\u003cp\u003eAvoid assuming that combining 23% vitamin C + exfoliating acids + retinol + multiple pigmentation serums in one routine will produce better results.\u003c\/p\u003e\u003cp\u003eIf using other intensive actives, separate them according to skin tolerance and the instructions for those products.\u003c\/p\u003e\u003cp\u003eWithin the collection, there is an important distinction:\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGOODAL Green Tangerine Vita C Dark Spot Care Serum\u003c\/strong\u003e\u003cbr\u003eA more approachable option built around green tangerine and a vitamin C derivative.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCOSRX Advanced The Vitamin C 23 Serum\u003c\/strong\u003e\u003cbr\u003eA substantially stronger option containing 23% pure ascorbic acid, better suited to experienced vitamin C users intentionally seeking higher-strength treatment.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eGlass Ritual Principle: Stronger is a treatment option—not automatically a better starting point.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eKey Ingredients\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePure Ascorbic Acid — 23%\u003c\/strong\u003e\u003cbr\u003eA potent form of vitamin C providing antioxidant support and helping improve the appearance of pigmentation, dullness and uneven-looking tone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e3-O-Ethyl Ascorbic Acid\u003c\/strong\u003e\u003cbr\u003eA vitamin C derivative that complements the formula's primary pure ascorbic acid.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTocotrienols + Tocopherol\u003c\/strong\u003e\u003cbr\u003eForms of vitamin E that provide additional antioxidant support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGlutathione\u003c\/strong\u003e\u003cbr\u003eAn antioxidant that complements the serum's broader antioxidant system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNiacinamide\u003c\/strong\u003e\u003cbr\u003eSupports a brighter, more even-looking complexion and healthy barrier function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSodium Hyaluronate\u003c\/strong\u003e\u003cbr\u003eHelps attract and retain moisture.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePanthenol\u003c\/strong\u003e\u003cbr\u003eProvides hydration and skin-conditioning support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSqualane\u003c\/strong\u003e\u003cbr\u003eProvides lightweight emollient support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAllantoin\u003c\/strong\u003e\u003cbr\u003eProvides soothing and skin-conditioning support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAdenosine\u003c\/strong\u003e\u003cbr\u003eProvides skin-conditioning support and complements the formula's care for the appearance of early signs of ageing.\u003c\/p\u003e\u003ch2\u003eFull Ingredients\u003c\/h2\u003e\u003cp\u003eAqua\/Water, Ascorbic Acid (23%), Butylene Glycol, Dimethicone, Panthenol, 3-O-Ethyl Ascorbic Acid, Squalane, Sodium Hydroxide, Caffeine, Sodium Hyaluronate, Sodium Metaphosphate, Adenosine, Acetyl Glucosamine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Arginine, Niacinamide, Pentylene Glycol, Glutathione, Helianthus Annuus (Sunflower) Seed Oil, Methyl Trimethicone, Carthamus Tinctorius (Safflower) Seed Oil, Camellia Japonica Seed Oil, Daucus Carota Sativa (Carrot) Root Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Beta-Carotene.\u003c\/p\u003e\u003ch2\u003eSafety \u0026amp; Ingredient Information\u003c\/h2\u003e\u003cp\u003eFor external use only. Avoid direct contact with the eyes. Discontinue use if persistent irritation occurs.\u003c\/p\u003e\u003cp\u003eThis is a high-concentration 23% pure vitamin C formula. Introduce gradually, particularly if your skin is not accustomed to strong vitamin C treatments.\u003c\/p\u003e\u003cp\u003eAvoid automatically combining it in the same routine with retinoids, strong exfoliating acids or other high-concentration active treatments. COSRX also advises separating this serum from copper-peptide products.\u003c\/p\u003e\u003cp\u003ePure vitamin C is inherently sensitive to oxidation. Close the product securely after use and follow the storage instructions provided with the product. COSRX currently advises using the serum within two months after opening.\u003c\/p\u003e\u003cp\u003eIngredient formulations can change over time. Always check the ingredient list printed on the specific product packaging you receive if you have known allergies or sensitivities.\u003c\/p\u003e\u003cp\u003eGlass Ritual positions COSRX Advanced The Vitamin C 23 Serum as an advanced cosmetic treatment designed to help improve the appearance of dark spots, post-blemish marks, dullness and uneven-looking skin tone. It is not positioned as a treatment for a medical pigmentation disorder.\u003c\/p\u003e","brand":"peggyptyltd","offers":[{"title":"20ml","offer_id":46003808207039,"sku":"633799_IMYJE1","price":85.76,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/8501\/1903\/files\/1719814221463_c7f12ae0dc624896acc40a9e7394fee3.png?v=1786532657","url":"https:\/\/peggyptyltd.com\/products\/cosrx-the-vitamin-c-23-serum-20ml","provider":"Glass Ritual","version":"1.0","type":"link"}