COSRX Vitamin C 23 Serum (20ml)

A potent dose of glow. COSRX's cult Vitamin C 23 Serum is formulated with 23% pure L-Ascorbic Acid to visibly fade dark spots, brighten dullness, and even out tone — with vitamin E and hyaluronic acid to cushion and hydrate as it works.

Why you'll love it

• High-potency brightening: 23% pure vitamin C targets dark spots, hyperpigmentation, and uneven tone.
• Antioxidant glow: Defends against environmental stress for a radiant, youthful-looking finish.
• Fast-absorbing: A lightweight formula that sinks in and layers cleanly.

How to use

After toner, apply a few drops in the evening, avoiding the eye area. Introduce gradually and always follow with SPF the next morning. Best for normal to oily skin.

Loved by reviewers

• From COSRX — a global K-beauty staple rated 4.9 stars by reviewers.
• Fans report visibly brighter, more even skin with consistent use.
• A repeat-buy for anyone tackling dark spots and dullness.

Details

Size: 20ml · 23% vitamin C serum · Best for normal to oily skin.