Reveal radiant, youthful skin with COSRX Pure Vitamin C 23% Serum, a lightweight yet powerful formula designed to brighten, hydrate, and smooth. Enriched with Pure Vitamin C (Ascorbic Acid) to even skin tone, Super Vitamin E (Tocotrienol) to protect against environmental damage, and Hyaluronic Acid for deep hydration, this serum helps reduce the look of fine lines and dullness. Gentle enough for sensitive skin with proper patch testing, it absorbs quickly without leaving a sticky residue—perfect for daily use. For optimal results, apply morning and night, and follow with SPF during the day. Store in the refrigerator to preserve freshness.