COSRX - The Niacinamide 15 Serum (20ml)

The COSRX The Niacinamide 15 Serum is a high‑strength, fast‑acting treatment designed to target every stage of acne while improving excess oil, enlarged pores, uneven tone, and rough texture. Powered by 15% Niacinamide, Zinc PCA, Acetyl Glucosamine, and Allantoin, this lightweight serum absorbs quickly and delivers visible improvements in just 4 weeks. Clinical results show a 45.27% decrease in pore count, 48.07% reduction in oiliness, 42.72% fewer blackheads, and 50% fewer whiteheads. It also improves blemishes by 15.50%, reduces pigmentation by 19.47%, and evens out redness by 24%.

Formulated for acne‑prone and oily skin, it provides active intensive acne care by preventing excess sebum, soothing rising breakouts, and fading post‑acne marks. Niacinamide 15% refines texture and brightens dark spots, Zinc PCA reduces sebum and clears breakouts, Acetyl Glucosamine smooths and exfoliates, and Allantoin calms irritation. In user testing, 100% agreed their acne spots, pores, and oiliness improved within four weeks.

Its refreshing, residue‑free texture layers seamlessly under skincare or makeup, making it an easy addition to any routine. Ideal for oily, combination, and acne‑prone skin, the COSRX Niacinamide 15 Serum delivers clearer, smoother, more balanced skin with consistent use.

Active Ingredients : Niacinamide, Butylene Glycol, Trehalose, Zinc PCA, Allantoin, Citric Acid, Tocopherol (Vitamin E)

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