The COSRX The Niacinamide 15 Serum is a high-strength treatment designed to help control excess oil, refine pores, and improve uneven skin tone. Formulated with 15% niacinamide, this lightweight serum helps balance sebum production while supporting clearer, smoother-looking skin.

Enhanced with zinc PCA and acetyl glucosamine, the formula targets breakouts, post-acne marks, and rough texture while maintaining a comfortable, non-greasy finish.

Key Benefits

Controls excess oil
15% niacinamide and zinc PCA help regulate sebum production and reduce unwanted shine.

Refines pores and texture
Helps minimize the appearance of enlarged pores and smooth uneven skin texture.

Fades post-acne marks
Niacinamide helps improve skin tone and reduce the appearance of dark spots.

Soothes and supports the skin barrier
Allantoin and trehalose help calm irritation while maintaining hydration.

Who It’s For

Ideal for oily, combination, and acne-prone skin dealing with excess sebum, enlarged pores, or post-acne marks. Suitable for anyone looking to improve overall skin clarity and balance.

How To Use

After cleansing and toning, apply a few drops to the face and gently pat until absorbed. Follow with moisturizer.

Pro Tip

This serum can be used morning and night, but always apply broad-spectrum sunscreen during the day to protect the skin and maintain brightening results.

Ingredients

Full 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