The Niacinamide 15 Serum 20ml [Exp. May 14, 2026]

COSRX The Niacinamide 15 Serum is a highly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control. This high-performance product is proven to reduce the number and severity of acne breakouts, and if applied consistently, it can help diminish the appearance of congested pores. Its fast-acting formula works on the surface and within pores to control excess sebum production, exfoliates and smoothes rough skin, and keeps skin looking clear and healthy.

Info

What it does:

• 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

How to use:

1. 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 and 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.

What you get:

(1) COSRX The Niacinamide 15 Serum 20ml

Ingredients

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