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Cosrx - The Niacinamide 15 Serum

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$22.19 $29.99 In stock

COSRX The Niacinamide 15 Serum – Pore-Refining & Radiance-Boosting Care

What is it?

COSRX The Niacinamide 15 Serum is a high-strength, lightweight serum that targets enlarged pores, uneven texture, and excess oil.

  • Minimizes pores and balances oil production

  • Calms redness and smooths skin texture

  • Fast-absorbing, non-greasy formula

  • Dermatologist-tested and safe for sensitive skin

  • Key ingredients: 15% Niacinamide, Zinc PCA

How to use

  • Apply a few drops to clean, dry skin

  • Gently massage until fully absorbed

  • Follow with moisturizer

Ingredients

Niacinamide (15%), Zinc PCA, Butylene Glycol, Dipropylene Glycol, Allantoin, 1,2-Hexanediol, Panthenol, etc.

Customer Reviews (5.0 / 5 · 5 reviews)

David Q. ★★★★★

I've been using this on my cheeks where my pores are most visible, and after about three weeks the texture there genuinely looks smoother and less obvious. It layers fine under moisturizer too, no pilling.

Jason L. ★★★★★

The texture is so light it disappears before I even finish patting it in, yet my skin looks noticeably less dull by midday. I've been using it every morning for two weeks and the shine around my T-zone has finally calmed down.

Eva ★★★★★

Three weeks in and my pores around my nose actually look tighter, plus the lightweight texture sinks in fast so it layers fine under moisturizer. It’s strong at 15% niacinamide, so I started every other day to avoid any sting, but my skin’s definitely more even now.