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COSRX’s The Niacinamide 15 Serum is formulated with 15% niacinamide, paired with zinc PCA to deeply refine the appearance of pores, regulate excess sebum, and help reduce the look of post-acne marks.
Ideal for oily, combination or blemish-prone skin, it delivers a clearer, smoother, more even complexion with continued use.
*Non-comedogenic tested - doesn't clog the pores.
Size : 20ml / 0.67 fl. oz
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Yes — dropped in price once in the last 90 days, reaching $17.50 at Cupidrop on April 14, 2026.
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