COSRX Advanced The Vitamin C 23 Serum 20ml

A high-concentration Vitamin C serum combining Ascorbic Acid with 3-O-Ethyl Ascorbic Acid, plus niacinamide, squalane, and caffeine, to brighten dull-looking skin, fade the look of dark spots, and support collagen production. Clinically formulated for higher potency and multi-layer hydration compared to standard Vitamin C serums, and tested by independent Korean skin research labs.