Featuring a powerful percentage of niacinamide, the COSRX The Niacinamide 15 Serum helps to visibly brighten, tone, and diminish the look of pores. Ideal for blemish-prone skin types, the serum is infused with 15% niacinamide, a high concentration to provide optimal efficacy of the active. The multi-benefit formula is fortified with zinc PCA to minimise the appearance of excess oils and sebum, encouraging a more mattified, yet radiant result. Acetylglucosamine helps to gently exfoliate the skin to reveal a refreshed complexion, while allantoin keeps the skin quenched with moisture.