COSRX The Niacinamide 15% Serum
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- 100% Authentic
- 30 Days Return
- Ship From The USA
Transform your skin in just one week. This powerful niacinamide serum targets breakouts, dark spots, and texture while keeping your skin calm, hydrated, and balanced.
🌟 15% niacinamide for brightening & oil control
💧 2% N-acetyl glucosamine to fade discoloration
🛡️ 1% zinc PCA to calm and protect
✨ Lightweight formula absorbs instantly
🌿 Gentle yet potent for visible results fast
Product Summary
Product Summary
The Niacinamide 15% Serum by COSRX is a high-performance treatment formulated with 15% niacinamide, 2% N-acetyl glucosamine, and 1% zinc PCA to regulate excess oil, fade hyperpigmentation, minimize pore appearance, and calm irritation. Enriched with allantoin and tocopherol, it hydrates while refining skin texture for a smoother, more even-toned look. This fast-absorbing formula is ideal for oily, acne-prone, combination, or textured skin—earning rave reviews for delivering visible results in as little as seven days.
Ingredients
Ingredients
The COSRX Niacinamide 15 Serum is powered by a skin-friendly blend designed to clarify and balance:
Water, Pentylene Glycol, Niacinamide, Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Allantoin, Tocopherol, Sodium Phytate, Citric Acid
Please note that ingredient lists may change or vary over time. For the most accurate and up-to-date information, refer to the product packaging or the manufacturer's official website.
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Why You'll Love It
🌿 15% Niacinamide brightens dull skin and fades post-acne marks
✨ Zinc PCA helps reduce oil and calms active breakouts
💧 Acetyl Glucosamine boosts glow and improves skin texture
🥛 Lightweight and non-sticky formula perfect for layering
🧴 Great for enlarged pores, uneven tone, or rough texture
🪞 Works well under makeup and SPF with no pilling
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Features & Benefits
✔️ 15% brightening-grade niacinamide for spot correction
✔️ Refines large pores and controls sebum production
✔️ Supports acne healing and skin barrier health
✔️ Promotes smoother, brighter, more even skin
✔️ Fragrance-free, alcohol-free, and silicone-free
✔️ Suitable for oily, sensitive, and acne-prone skin types
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Product Details
✨ 100% Authentic – Made in Korea
📅 Best By: ~12/2026
🔖 UPC: 8809598454637
✅ Return accepted within 30 days
📦 Ships Fast from the USA -
How To Use
① After toner, apply 2–3 drops to the entire face
② Pat gently for better absorption
③ Use daily, morning or night
④ Follow with moisturizer
⑤ Apply SPF during the day
Product FAQ
Can this be used with other active ingredients like retinol or vitamin C?
Yes, but for beginners, it’s recommended to alternate use (AM/PM) to avoid irritation. Always patch test first.
Is it too strong for sensitive skin?
Although it’s potent, the formula is designed to minimize irritation. Start with every other day if your skin is reactive.
How long until I see results?
Many users report clearer, smoother, more balanced skin in as little as 2–3 weeks of consistent daily use.