COSRX The Niacinamide 15 Serum

What it is

The COSRX The Niacinamide 15 Serum is a powerful treatment designed to visibly reduce acne, excess oil, and post-blemish marks. With 15% pure Niacinamide and synergistic actives like Zinc PCA and Acetyl Glucosamine, it targets breakouts and uneven tone while strengthening the skin barrier. Perfect for oily, acne-prone, or combination skin.

Light yet intensive texture

This fast-absorbing serum delivers a smooth, matte finish without stickiness. It penetrates deeply to calm inflammation, reduce redness, and refine pores while maintaining hydration.

Key ingredients

• Niacinamide (15%) – Minimizes pores, balances oil, and brightens dull skin tone.
• Zinc PCA – Controls sebum and soothes active breakouts.
• Acetyl Glucosamine – Gently exfoliates and improves uneven skin texture.
• Allantoin – Calms irritation and supports barrier repair.
• Panthenol – Restores hydration and prevents dryness.

Benefits

• Reduces acne and blemishes
• Improves skin tone and texture
• Minimizes pores and excess oil
• Brightens and smooths dull skin
• Non-sticky formula suitable for daily use

How to use

After cleansing and toning, apply 2–3 drops to affected areas or the entire face. Gently pat for absorption. Use once daily, preferably in the evening. Follow with a moisturizer and sunscreen during the day.

Ingredients (INCI)

Niacinamide (15%), Zinc PCA, Acetyl Glucosamine, Panthenol, Allantoin, Butylene Glycol, Dipropylene Glycol, Sodium Hyaluronate, Ethylhexylglycerin, 1,2-Hexanediol, and other skin-conditioning agents.