COSRX The Niacinamide 15 Serum – Honest Review for Oily & Acne-Prone Skin
If you have oily or acne-prone skin, then you’ve probably heard about niacinamide. It’s a holy grail ingredient when it comes to brightening, calming acne, and reducing oil. I recently tried the COSRX The Niacinamide 15 Serum, and let me tell you — it’s one of the lightest and most comfortable serums I’ve ever used….
