COSRX The Niacinamide 15 Serum is a lightweight, fast-absorbing formula for oily, combination and blemish-prone skin. The concentrated serum helps visibly balance excess oil, refine the look of enlarged pores and brighten the appearance of post-breakout marks without leaving a heavy finish. Its clear texture slips easily into morning or evening routines and layers under moisturizer or sunscreen.
At the center is 15% niacinamide, paired with acetyl glucosamine and Zinc PCA. This combination is positioned to support a more even-looking tone, help manage visible shine and keep pore congestion from dominating the complexion. Allantoin adds a soothing, skin-softening touch, while trehalose supports a comfortable, hydrated feel.
Choose this if your main concerns are recurring shine, noticeable pores, uneven texture or flat marks left after blemishes. It is a high-strength niacinamide serum, so more is not necessarily better: start with a few drops, patch test first and reduce frequency if your skin feels uncomfortable. COSRX recommends separating it from high-strength vitamin C, AHA/BHA and retinoid products rather than applying them in the same routine.
Apply after cleansing and toning, then follow with moisturizer. If used in the morning, finish with sunscreen. With continued use, the formula is designed to leave skin looking clearer, smoother and more balanced.
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100 Reedle Shot Stick Pouch$11.52A focused set of tone, texture and oil-balance benefits makes this high-strength serum most useful for congested-looking, shiny skin.
Helps visibly brighten uneven tone and support the skin barrier.
A defined non-reducing disaccharide used as a humectant and moisturizer. It can support a water-focused formula, but label presence cannot prove dose or results.
Helps soothe and soften dry, rough-feeling skin.
Based on COSRX's Dermacosmetic Skin Science Laboratory testing. Individual results may vary.
Skin that looks shiny again soon after cleansing, especially through the T-zone.
Pores that appear more noticeable when oil and uneven surface texture collect.
Lingering areas of uneven tone that remain visible after a blemish has settled.
A rough or bumpy-looking surface that keeps skin from appearing smooth and even.
Flat post-breakout marks that leave the complexion looking uneven over time.
Helps reduce the look of excess shine so oily areas appear fresher and more balanced.
Supports a smoother-looking surface where oil and congestion make pores more noticeable.
Buy these products together
This itemThe Niacinamide 15 Serum 20ml$23.00ANUA Heartleaf Pore Control Cleansing Oil Mild 200ml$25.00ANUA Heartleaf Quercetinol Pore Deep Cleansing Foam 150ml$15.00Total price: $63.00
This itemThe Niacinamide 15 Serum 20ml$23.00ANUA Heartleaf Pore Control Cleansing Oil Mild 200ml$25.00ANUA Heartleaf Quercetinol Pore Deep Cleansing Foam 150ml$15.00Total price: $63.00
Targets the look of flat, lingering discoloration for a more even-looking complexion.
Helps soften the appearance of uneven texture without adding a heavy or greasy layer.
The clear, quick-absorbing serum fits beneath moisturizer, sunscreen or makeup.
