Cosrx The Niacinamide 15 Acetyl Glucosamine + Zinc

COSRX The Niacinamide 15 Serum (0.67 fl. oz) is a highly concentrated, lightweight, non-sticky serum formulated with 15% Niacinamide, 2% Acetyl Glucosamine (NAG), 1% Zinc PCA, and 0.1% Allantoin for comprehensive acne care. Ideal for oily, combination, or acne-prone skin, it addresses excess sebum, enlarged pores, bumpy texture, hyperpigmentation, and all stages of acne (blackheads, whiteheads, scars). Niacinamide reduces sebum production, soothes inflammation, and fades post-acne marks, while NAG exfoliates and enhances hyperpigmentation reduction synergistically with niacinamide. Zinc PCA inhibits inflammation, prevents breakouts, and promotes skin repair, and Allantoin boosts collagen synthesis for regeneration. Clinically proven to reduce blackheads by 42.27%, whiteheads by 50%, sebum by 45.27%, pigmentation by 19.47%, and improve brightness by 2.59% after 4 weeks (based on 20 subjects). This dermatologically tested, non-comedogenic, fragrance-free, paraben-free, sulfate-free, and cruelty-free serum absorbs quickly, leaving skin radiant and smooth.