COSRX The Niacinamide 15 Serum, 1.01 fl oz, 2-pack

COSRX The Niacinamide 15 Serum delivers a potent 15% niacinamide concentration designed to address multiple skin concerns in one lightweight formula. This two-pack provides an extended supply of the Korean beauty staple that targets enlarged pores, uneven texture, and excess sebum production. The serum absorbs quickly without leaving residue, making it suitable for layering within your skincare routine. Niacinamide strengthens the skin barrier while regulating oil balance, ideal for combination to oily skin types seeking visible refinement and clarity.