Cosrx The Vitamin C 13 Serum

Gentle brightening serum for everyday glow

Cosrx The Vitamin C 13 Serum is a lightweight, water-based formula designed to support clearer, brighter, and more balanced-looking skin.

Formulated with 13% pure vitamin C (ascorbic acid), this serum targets visible dark spots, uneven skin tone, and early signs of aging, while remaining gentle enough for daily use—even on sensitive skin.

The formula combines antioxidants such as vitamin C and tocotrienol (a potent form of vitamin E) to help protect the skin from external stressors. Additional ingredients like niacinamide and licorice root extract work to refine and brighten the complexion, while allantoin, panthenol, and hyaluronic acid support moisture retention and calm visible redness.

With a mildly acidic pH level between 3.0 and 4.5, the serum balances efficacy and skin comfort. It absorbs quickly without leaving a sticky residue, making it an easy addition to any morning or evening skincare routine.

This serum is well-suited for those looking to maintain a healthy-looking glow, smooth texture, and visibly even skin tone with a formula that prioritizes minimal irritation.

Looking for a stronger concentration? Cosrx The Vitamin C 23 Serum is also available for those who prefer a more intensive brightening care.

Size: 0.67 fl. oz / 20 ml

Ingredients we love ♥

Ascorbic acid: A pure form of vitamin C known for its brightening and antioxidant effects. Helps fade dark spots, boost radiance, and support collagen production for firmer, smoother skin.

3-O-Ethyl Ascorbic acid: A stable vitamin C derivative that brightens skin tone and improves the appearance of pigmentation without irritation. Offers antioxidant protection and helps reduce early signs of aging.

Sodium hyaluronate: A low molecular weight form of hyaluronic acid that deeply hydrates the skin, helping to maintain moisture levels, plump fine lines, and support a supple texture.

Glutathione: A powerful antioxidant that helps reduce oxidative stress, supports skin clarity, and works to even out skin tone by inhibiting melanin production.

Tocotrienol: A form of vitamin E with superior antioxidant properties compared to tocopherol. Helps protect skin from environmental stress and supports elasticity and firmness.

Tocopherol: A well-known form of vitamin E that nourishes and protects skin from free radical damage while improving moisture retention.

Panthenol: Also known as provitamin B5, it soothes and moisturizes the skin, helping to calm irritation, strengthen the barrier, and enhance overall softness.

Adenosine: A skin-restoring ingredient that helps smooth the appearance of fine lines and wrinkles while supporting elasticity and a firmer look.

Features & Advantages ♥

• Vegan
• Cruelty-free
• Paraben-free
• Sulfate-free
• Mineral oil-free
• Essential-oil-free
• Artificial coloring-free
• Artificial fragrance-free

The descriptions provided reflect the general characteristics of the ingredients used. Individual results may vary. Always test the product on a small area of skin before full use.