COSRX Niacinamide 15% Serum

COSRX Niacinamide 15% Serum

Transform your skin with the power of high-concentration Niacinamide in COSRX Niacinamide 15% Serum — a potent, results-driven serum formulated with 15% Niacinamide (Vitamin B3) to visibly brighten, clarify, and perfect skin tone while minimizing pores, controlling oil, and reducing blemishes for a genuinely flawless complexion.

Key Benefits

• High-Strength 15% Niacinamide: A powerful concentration of Vitamin B3 that delivers faster, more visible results in brightening, pore minimizing, and blemish control compared to lower-strength formulas — ideal for those who have built tolerance to standard Niacinamide concentrations.
• Brightens & Evens Skin Tone: Inhibits melanin transfer to the skin's surface to visibly fade dark spots, hyperpigmentation, post-acne marks, and uneven skin tone for a brighter, more luminous, and uniform complexion.
• Minimizes Pores: Regulates sebum production and tightens the appearance of enlarged pores for a visibly smoother, more refined skin texture.
• Controls Excess Oil & Shine: Effectively balances sebum production to keep oily and combination skin looking matte, fresh, and shine-free throughout the day.
• Reduces Blemishes & Breakouts: Anti-inflammatory properties help calm active blemishes, reduce redness, and prevent future breakouts for consistently clearer skin.
• Strengthens Skin Barrier: Boosts the production of ceramides and skin-identical lipids to reinforce the skin's natural protective barrier, improving resilience and reducing sensitivity over time.

How to Use

Apply a few drops to clean skin in the AM and/or PM after toning and before moisturizer. Gently press into face and neck until fully absorbed. Allow to absorb fully before applying the next step. Follow with moisturizer and SPF 30+ in the morning.

Note: If new to high-strength Niacinamide, start with PM use only 3-4 times per week and gradually increase frequency as your skin adjusts. Some initial flushing or tingling may occur — this is normal and typically subsides with continued use.

Why You'll Love It

Imagine skin that looks genuinely clearer, brighter, and more even — with visibly smaller pores, fewer blemishes, and a radiance that makes you feel confident going makeup-free. COSRX Niacinamide 15% Serum delivers exactly that, and faster than you'd expect. At 15% concentration, this is Niacinamide working at its most powerful — tackling dark spots, oil, pores, and blemishes all at once, with the kind of visible results that make it an instant staple in your routine. Your clearest, most radiant skin starts here.

Skin Type: All skin types, especially oily, acne-prone, and uneven skin | Key Ingredient: 15% Niacinamide (Vitamin B3)