COSRX
COSRX
The Niacinamide 15 Serum 20ml
Step 3 of 7 · Treat in your K-beauty routine
https://www.cosrx.com/products/the-niacinamide-15-serum?_pos=1&_sid=3de38cb79&_ss=r
High-Potency Targeted Treatment
Delivers a concentrated payload of actives directly to skin's deeper layers — far beyond what a moisturiser can reach
Pore-Minimising Niacinamide
Regulates sebum production, fades post-inflammatory hyperpigmentation, and visibly tightens pores over 4–8 weeks of consistent use
Sourced Direct from Korea
100% authentic, procured directly from licensed Korean brand partners and distributors — never via grey-market or third-party resellers
About COSRX
Cult Actives, Cult Following
COSRX became a global K-beauty phenomenon by doing one thing exceptionally well: creating straightforward, active-forward formulas at an accessible price. Their snail mucin essence and AHA/BHA treatments have earned near-mythical status among skincare enthusiasts worldwide.
Free Shipping
On all orders over $60. Same-day dispatch for orders placed before 2 pm.
Easy Returns
Not in love with it? Return within 14 days for a full refund, no questions asked.
100% Authentic
Every product sourced directly from Korean brand partners and licensed distributors.
Complete your COSRX routine
More from this brand to build out your full skincare ritual









