The Vitamin C23 Serum (20g)

COSRX The Vitamin C 23 Serum is a potent, next-generation vitamin C treatment featuring a high concentration of 23% pure ascorbic acid combined with an oil-based layer that protects the active ingredient from oxidation, ensuring its stability and freshness during application. The formula includes tocotrienol, a super vitamin E known for its antioxidant power that is 50 times stronger than regular tocopherol, which helps boost collagen production and enhances the skin’s defense against oxidative stress. Deep hydration is provided by hyaluronic acid, which plumps and smooths the skin, while allantoin soothes and calms any potential irritation, making this serum suitable even for sensitive or reactive skin types.

Clinically tested on 20 subjects over 4 weeks, the serum showed clear and significant improvements: pigmentation, such as melasma and blemishes, was reduced by 16.26%, complexion ton,e including redness and overall evenness, improved by 32.89%, and skin radiance increased by 32.36%. Additionally, the internal elasticity of the skin improved by 16.36%, while pore volume and pore count decreased by 38.65% and 27.18% respectively. The overall perceived skin “age” improved by 4.18%. These results demonstrate the serum’s effectiveness in brightening dull and uneven skin tones, fading dark spots and post-acne marks, firming the skin, minimizing enlarged pores, and reducing early signs of photoaging.

The texture is lightweight and fast-absorbing, leaving no greasy or sticky residue, making it comfortable for daily use either morning or night, with the reminder to always apply sunscreen during daytime use. The serum is free from fragrance and parabens, catering to sensitive skin needs. For optimal efficacy, it is recommended to store the serum in the refrigerator and use it within two months after opening. Overall, COSRX The Vitamin C 23 Serum offers a clinically validated solution delivering brighter, firmer, clearer, and more youthful-looking skin without the need for bullet points.

After cleansing, during the serum phase, shake the bottle lightly once or twice from side to side and apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the inside of the face, working towards the edges.

KEEP REFRIGERATED (3~10°C)
*Please use immediately after purchase and store upright in refrigerator once opened.

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

For information purposes only. As all products are subject to change, please also consult the list of ingredients on the packaging of the product you receive.