Cosrx The Niacinamide 15 Serum is a anti blemish face serum for oily skin. A highly concentrated serum that combines the highest concentration of niacinamide with optimal ratios of synergistic ingredients to provide total acne control. Designed specifically for acne-prone skin, The Niacinamide 15 Serum offers a range of benefits, including improving the amount of oil synthesis, reducing the number of blackheads and whiteheads, brightening pigmentation (including melasma and visible spots), and improving skin tone by counteracting redness and yellowness and giving radiance. Its noncomedogenic formulation makes it suitable for a wide range of skin types, offering an effective treatment for anyone who is seeking a solution for acne and its side effects.