• COSRX The Niacinamide 15 Serum with dropper and molecular structure, featuring 15% niacinamide blended with Acetyl Glucosamine and Zinc PCA; clinically designed for acne-prone, oily skin to control sebum, reduce large pores, and smooth skin texture; compatible with exfoliating or brightening actives.
  • COSRX The Niacinamide 15 Serum displayed with text ‘15% of Niacinamide’, emphasizing its high concentration formula to target excess sebum, large pores, and uneven skin tone; suitable for for oily, acne-prone skin looking to even out skin tone.
  • Clinical infographic of COSRX The Niacinamide 15 Serum showing visible changes in 4 weeks including reduced acne, pores, blackheads, and oil; dermatology-tested Korean serum for oily and congested skin with improved tone and texture.
  • Model holding COSRX The Niacinamide 15 Serum with clinical claim of 24% redness reduction in 4 weeks; high-strength niacinamide formula proven to calm acne inflammation and even out post-blemish pigmentation on sensitive, oily skin.
  • Infographic showing COSRX The Niacinamide 15 Serum passing a non-comedogenic test by Dermacosmetic Skin Science Laboratory; verified not to clog pores and proven suitable for acne-prone skin, with safe daily use under makeup or actives.
  • Before and after photos from COSRX The Niacinamide 15 Serum clinical trial showing 15.5% blemish reduction and 19.47% pigmentation improvement after 4 weeks; niacinamide-based Korean serum targeting hyperpigmentation and acne marks.
  • Dermacosmetic laboratory test results of COSRX The Niacinamide 15 Serum proving 45.27% decrease in pore count, 48.07% less oiliness, and up to 50% reduction in whiteheads within 4 weeks; suitable for acne-prone, oily skin types.
  • Before-and-after user results showing visible reduction of acne scars and smoother skin after consistent use of COSRX The Niacinamide 15 Serum; formulated to minimize sebum and refine large pores while fading dark spots.

The Niacinamide 15 Serum

The Niacinamide 15 Serum

✅ Made In USA

✅ Quick Delivery

✅ Cruelty Free

 (88 Reviews)
$15.00
$15.00 $25.00
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COSRX The Niacinamide 15 Serum with dropper and molecular structure, featuring 15% niacinamide blended with Acetyl Glucosamine and Zinc PCA; clinically designed for acne-prone, oily skin to control sebum, reduce large pores, and smooth skin texture; compatible with exfoliating or brightening actives.

The Niacinamide 15 Serum

$15.00
$15.00 $25.00
SAVE 40% Sold out

Total Breakout Care & Oil Control

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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