
Cosrx The Niacinamide 15 Serum 20ml
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The COSRX The Niacinamide 15 Serum 20ml is a potent solution for oily, combination, and acne-prone skin, delivering targeted care to reduce excess sebum, minimize pores, and fade dark spots. Enriched with 15% niacinamide, Zinc PCA, N-Acetylglucosamine, Allantoin, and Hyaluronic Acid, it balances, hydrates, and soothes your skin while improving overall texture and tone. Lightweight, non-greasy, and fast-absorbing, it layers perfectly under other skincare products and makeup. Available at Skinnora, this serum provides trusted, 100% authentic Korean skincare, helping you achieve a brighter, calmer, and healthier complexion every day.
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Description
Description
Cosrx The Niacinamide 15 Serum 20ml is a high-strength treatment serum designed to target blemishes, excess oil, and uneven skin tone. With 15% niacinamide, this formula works to visibly reduce breakouts, minimize pores, and brighten the complexion. Its lightweight texture absorbs quickly without stickiness, making it suitable for oily, acne-prone, and combination skin. This serum helps restore balance, improve clarity, and promote healthier, smoother skin with consistent use.
About the brand

Cosrx
More ProductsA world-renowned K-beauty brand that emphasizes minimalist packaging and effective, skin-friendly treatments for acne and sensitivity. Their functional formulas use key ingredients like snail mucin and centella to solve specific skin issues.
More from Cosrx
Key Benefits
Key Benefits
Blemish control – Reduces breakouts and post-acne marks.
Oil regulation – Balances excess sebum production for clearer skin.
Brightening – Improves dullness and uneven skin tone.
Pore care – Minimizes the appearance of enlarged pores.
Barrier support – Strengthens skin resilience and prevents moisture loss.
Key Ingredients & Benefits
Key Ingredients & Benefits
Niacinamide (15%) – Brightens complexion, reduces blemishes, and controls excess oil.
Zinc PCA – Helps regulate sebum and supports acne-prone skin.
Panthenol – Calms irritation and strengthens the skin barrier.
Allantoin – Soothes sensitivity and promotes healing.
N-Acetylglucosamine – Enhances skin texture and supports hydration.
Glycerin – Provides moisture and keeps skin soft.
How to Use
How to Use
Apply 2–3 drops of serum onto cleansed and toned skin.
Gently spread over the face, focusing on areas of concern.
Pat lightly until fully absorbed.
Follow with moisturizer.
Use in the evening, and apply sunscreen during the day when using niacinamide products.
Major Ingredients
Major Ingredients
Water, Pentylene Glycol, Niacinamide(15%), Butylene Glycol, Acetyl Glucosamine, 1,2-Hexanediol, Zinc PCA, Trehalose, Xanthan Gum, Pullulan, Allantoin, Ethylhexylglycerin, Sodium Phytate, Citric Acid, Tocopherol
Disclaimer
Disclaimer
Please check the product in front of the delivery person. Once delivery is completed, no complaints or exchanges will be accepted. Product packaging may change from time to time, so you may receive either the old or new version — this is completely normal.

Cosrx The Niacinamide 15 Serum 20ml
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