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How to Use Niacinamide Serum: A Simple Routine That Actually Works
Niacinamide serum is one of those “everyone says it’s a must-have” products—until it pills under sunscreen, feels sticky by noon, or makes you wonder if it’s doing anything at all. Most of the time, the serum isn’t the problem. The routine is. To use niacinamide serum correctly, apply a small amount after cleansing (and toner […]
