COSRX The Vitamin C 13 Serum – 13% vitamin C serum 20 ml

COSRX The Vitamin C 13 Serum is a 20 ml radiance serum containing 13% ascorbic acid, a form of pure vitamin C. This is the C 13 version, distinct from the brand’s C 23 serum.

What to know

The formula also contains panthenol, Sodium Hyaluronate and allantoin, as well as Tocotrienols and Tocopherol. After opening, store the bottle upright in the refrigerator at 3–10°C and use within two months, as directed by the manufacturer.

How to use

After cleansing, apply a few drops at the serum step and massage from the centre of your face outwards, avoiding the eyes. In the morning, follow with SPF 30 or higher sunscreen. Do not layer with copper peptides; use them at different times.

Full INCI ingredients

Water, Ascorbic Acid (13%), Butylene Glycol, Dipropylene Glycol, Tromethamine, 3-O-Ethyl Ascorbic Acid, Panthenol, Acetyl Glucosamine, Caffeine, Sodium Hyaluronate, Sodium Sulfite, Disodium EDTA, Glutathione, Adenosine, Gardenia Florida Fruit Extract, Allantoin, Dextrin, Squalane, Tocotrienols, Tocopherol, Elaeis Guineensis (Palm) Oil, Arginine, Niacinamide, Pentylene Glycol, Glycyrrhiza Glabra (Licorice) Root Extract.

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