Cosrx The Niacinamide 15 Serum (20ml)

About COSRX The Niacinamide 15 Serum

COSRX The Niacinamide 15 Serum 20ml is not a basic brightening serum — it is a precision-formulated niacinamide treatment from one of Korea's most credible and clinically focused skincare brands. Where most niacinamide serums on the Bangladesh market sit at 5% or 10%, COSRX pushes this to 15% with a supporting cast of ingredients specifically chosen to enhance niacinamide's delivery and efficacy rather than dilute it with unnecessary fillers.

Niacinamide at 15% works noticeably faster on the skin's most stubborn concerns — enlarged pores, uneven skin tone, post-acne marks, and chronic oiliness. It regulates sebum production at the sebaceous gland level, blocks melanin transfer to surface skin cells, and strengthens the skin barrier simultaneously. For skin in Bangladesh exposed to constant heat, humidity, and UV radiation that triggers hyperpigmentation and congestion daily, a 15% niacinamide serum delivers meaningful results in a shorter timeframe than standard concentrations.

What separates this formula from other high-strength niacinamide serums is COSRX's commitment to clean and functional formulation. The texture is lightweight and serum-like, absorbing instantly without pilling or heaviness. It layers cleanly under any moisturizer or SPF and is well-tolerated even by skin types that have previously found high-concentration niacinamide products irritating.

Key Benefits

• 15% niacinamide delivers faster and more visible pore-refining and brightening results than standard concentrations
• Fades post-acne marks, dark spots, and uneven hyperpigmentation with consistent daily use
• Regulates sebum production and reduces surface shine on oily and combination skin
• Strengthens the skin barrier and reduces sensitivity and reactivity over time
• Lightweight formula absorbs instantly without pilling, greasiness, or heaviness
• Suitable for layering under moisturizer and SPF without disrupting the routine
• From COSRX — one of the most clinically trusted Korean skincare brands globally