COSRX The Niacinamide 15 Serum with Acetyl Glucosamine + Zinc PCA is a high-strength, multi-functional treatment serum designed to target acne, excess oil, and uneven skin tone while improving overall skin clarity and texture.

Formulated with a potent 15% niacinamide, this lightweight serum helps regulate sebum production, minimize the appearance of enlarged pores, and visibly reduce breakouts. The addition of acetyl glucosamine (NAG) works synergistically with niacinamide to brighten dull skin and fade post-acne marks, while zinc PCA calms inflammation and supports clearer, balanced skin.

Its non-comedogenic, fast-absorbing formula makes it especially suitable for oily, combination, and acne-prone skin types, delivering a smoother, more even complexion without clogging pores. With continued use, it helps refine skin texture, reduce redness, and enhance radiance.

Enriched with soothing ingredients like allantoin, the serum also supports skin barrier health and promotes gentle skin regeneration, making it effective yet comfortable for daily use.

Key Benefits:

Controls excess oil and shine
Minimizes pores and smooths texture
Fades dark spots and acne marks
Calms irritation and supports skin repair

Ideal for those seeking a targeted solution for breakouts and uneven skin, this serum delivers visible improvements in clarity and balance with consistent use.