The Niacinamide 15 serum from Cosrx, in a 20 ml format, is a concentrated treatment ideal for brightening and evening out the complexion. Enriched with una a high percentage of 15% niacinamide, it effectively works to reduce spots, minimize pores, and improve skin texture. Its lightweight formula absorbs quickly, providing una a feeling of freshness without leaving residues. Perfect for those who desire una brighter, smoother skin with a healthy and radiant appearance.