COSRX The Vitamin C 13 Face Serum

Brighten, even, and protect with 13% pure Vitamin C.

The COSRX Vitamin C 13 Face Serum delivers a potent dose of ascorbic acid to visibly reduce dark spots, even skin tone, and boost radiance — without irritation.

Key Ingredient 13% Ascorbic Acid (pure Vitamin C) — clinically proven to brighten hyperpigmentation and stimulate collagen production.

Best For Dull, uneven, or post-blemish skin. Suitable for normal, oily, and combination skin types. Patch test recommended for sensitive skin.

What to Expect Brighter, more even skin tone within 4–6 weeks of consistent use. Fades dark spots and gives skin a healthy, lit-from-within glow.

How to Use

1. Apply 2–3 drops to clean, dry skin in the morning.
2. Gently press into face and neck — avoid the eye area.
3. Follow with moisturizer and SPF (Vitamin C + sunscreen = maximum brightening).

Routine Step: Serum — use after toner, before moisturizer.