COSRX
Pure Vitamin C 23% Serum
A medium holy trinity active for hyperpigmentation and dullness, built around Vitamin C, with reviewed formula data, and some patch-test cautions.
Routine step
Serums & Treatments
Category
Holy Trinity Active
When to use
Night
Skin fit
Dark spots
10/10
Dullness
10/10
Aging
7/10
Texture
5/10
Best for
Ingredient highlights
Vitamin C (Ascorbic Acid)
Provides antioxidant support and helps brighten uneven tone
Panthenol
Helps soothe skin and reduce moisture loss
Niacinamide
Supports barrier function, oil balance, and more even tone
Tocopherol
Stabilizes vitamin C and provides antioxidant protection
Sodium Hyaluronate
Draws moisture into the skin to prevent dryness
Cautions
Best kept for night. Some actives do not play nicely with daytime sun.
Go slow if your skin is new to actives. Start a few nights a week.
Sensitive skin may sting. Patch-test before using it all over.
Full ingredients
Formula source and INCI list
Koracle has a reviewed formula record for this product.
Koracle has a reviewed ingredient source for this product.
Aqua/Water, Ascorbic Acid, 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
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Koracle is skincare education, not medical or dermatology advice. Patch-test new products. Ask a licensed dermatologist about acne, rosacea, eczema, allergic reactions, pregnancy concerns, or symptoms that persist.