CosRx The Niacinamide 15 Serum 20ml

£21.99

Total acne care with 15% niacinamide

The highly concentrated 15% niacinamide serum formula is blended with Acetyl Glucosamine and Zinc PCA for comprehensive acne care, with a texture that allows for easy absorption into the skin. This optimal ratio of synergistic ingredients also helps address excess oil, uneven skin tone, lack of radiance, and rough skin texture.

*Non-comedogenic tested -doesn't clog the pores.

Total acne care with 15% niacinamide

The highly concentrated 15% niacinamide serum formula is blended with Acetyl Glucosamine and Zinc PCA for comprehensive acne care, with a texture that allows for easy absorption into the skin. This optimal ratio of synergistic ingredients also helps address excess oil, uneven skin tone, lack of radiance, and rough skin texture.

*Non-comedogenic tested -doesn't clog the pores.

  • COSRX The Niacinamide 15 serum is for those with oily, combination, or acne-prone skin. It is particularly useful for individuals dealing with excess sebum production, enlarged pores, rough skin texture. It optimally combines 15% niacinamide with other ingredients and addresses all stages of acne, from the initial to the final stage, providing a comprehensive care solution.

  • - Bumpy skin 
    - Sebum oil 
    - Pores 
    - All stages of Acne 
    - Even skin tone 
    - Hyperpigmentation

  • Light and refreshing, it absorbs quickly without leaving any residue. It's easy to layer under other skincare products or makeup.

  • After cleansing, during the serum phase, apply a few drops to the skin. Use fingertips to gently massage and absorb the serum, starting from the center of the face working towards the edges.


    Highly concentrated serums should only be used in the evening? NO!
    This serum can be used in the morning and/or afternoon.

    * If applied in the morning, be sure to use with a SPF of 30 or higher.

  • • Niacinamide :
    Provides total acne care by controlling sebum production, soothing acne inflammation and diminishing post acne scars

    • N-Acetylglucosamine(NAG) :
    Works in synergy with niacinamide to effectively fade hyperpigmentation

    • Zinc PCA :
    Inhibits inflammation and promotes recovery of damaged skin

    • Allantoin :
    Promotes collagen synthesis to facilitate skin regeneration

  • Water, Pentylene Glycol, Niacinamide(15%), Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol

  • - After 4 Weeks

    • Non-Comedogenic Test Results
      42.27% reduction in blackheads
      50% reduction in whiteheads
      45.27% reduction in sebum levels
      48.07% improvement in oil control

    • Pigmentation
      19.47% reduction in pigmentation
      15.50% reduction in melanin area

    • Triple-Complexion Skin Tone
      24.89% reduction in redness
      11.73% reduction in yellowness
      2.59% improvement in brightness


      *Based on clinical trials of 20 subjects.
      As a result of the clinical trials from Dermacosmetic Skin Science Laboratory Co., Ltd.