COSRX The Niacinamide 15 Serum (20 ml)

For oily, breakout-prone skin that wants calm and control. A concentrated 15% niacinamide serum that helps balance oil and refine the look of pores.

Where it fits

Serum step: after toner, before moisturizer. Morning or night.

Good for

• Oily and combination skin
• Shine and the look of enlarged pores
• Blemish-prone skin and leftover marks

Key ingredients

• 15% niacinamide: helps balance oil and even out tone
• Zinc PCA: helps keep shine in check
• Acetyl glucosamine: supports a smoother-looking complexion

How to use

Apply 2–3 drops to clean skin and pat in. If you're new to niacinamide, start once a day.

Good to know

• High-strength niacinamide can cause temporary flushing in some people. Reduce use if that happens.
• Patch test first.

Details: 20 ml · Made in Korea · Genuine COSRX