Advanced The Vitamin C 23 Serum
The COSRX Advanced The Vitamin C 23 Serum is a skin-brightening serum formulated with 23% pure Ascorbic Acid as its hero active. The formula also includes 3-O-Ethyl Ascorbic Acid (a stable vitamin C derivative), a vitamin E derivative (Tocopherol/Tocotrienols) to amplify vitamin C's antioxidant effects, and Sodium Hyaluronate to help maintain skin moisture levels. Allantoin and Panthenol are included to soothe skin irritation, while Niacinamide and Licorice Root Extract further support brightening. The product is fragrance- and essential oil-free.
Apply 2–3 drops to entire face; pat gently for better absorption; follow with moisturizer and SPF during the day; avoid mixing with retinol or acids in the same routine; keep refrigerated between 3–10°C; replace cap with provided dropper after opening and shake lightly before use