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Skincare
COSRX

The Niacinamide 15 Serum

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15% niacinamide paired with acetyl glucosamine and zinc PCA — a minimalist 15-ingredient serum targeting sebum balance and visible pore refinement.

The anatomy

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5 key ingredients
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What it does for you

  • 15% niacinamide — one of the highest concentrations in a K-beauty serum, well above the 2-5% typically studied
  • Acetyl glucosamine synergizes with niacinamide for visible tone-evening support
  • Zinc PCA for sebum balance — targets oily and blemish-prone skin without drying

Best for these concerns

Visible poresExcess sebum and shineUneven skin tone
How to use

After cleansing and toning, apply 2-3 drops to the entire face. Can be used morning and evening. Follow with moisturizer.

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Ingredient descriptions are independently written by ana2me. Official product information on this page are copyrighted by their respective brands. We do not claim ownership of these materials and use them for informational purposes only. For inquiries, contact ana2me2026@gmail.com.