COSRX - glamchiclifestyle review for The Niacinamide 15 Serum

The niacinamide serum contains 15% niacinamide and helps control sebum and acne on the skin. Since I don't really suffer from acne, I'm using it to even my skintone and reduce any hyperpigmentation. So far my skin has been tolerating this percentage. I only use it once a day in order to keep my skin from drying out. It easily absorbs into the skin and doesn't cause any irritation. If you have dry skin, I recommend using a heavy moisturizer to offset the dryness that you might experience.