Cosrx CosRx, The Niacinamide 15 Serum, 0.67 fl. oz. (20 ml)

I’ve been using this serum consistently and I’m really impressed with the results. The 15% niacinamide works well to control excess oil, reduce the appearance of pores, and calm breakouts. It feels lightweight, absorbs quickly, and layers nicely under moisturizer without feeling sticky. With regular use, my skin looks more balanced, smoother, and brighter. A great option for oily or acne-prone skin if used properly and not overused.

I’ve been using the Niacinamide 15% serum, and honestly, it’s pretty good if you want your skin to look clearer and more even. The texture is lightweight, easy to apply, and absorbs fast without that sticky feeling. After a few uses, I noticed my skin looking a bit brighter and the small bumps/pigmentation areas calming down. Since this is a higher percentage, it can feel a little strong for sensitive skin, especially in the beginning. I used it only at night at first, and that really helped. There’s no heavy smell and it layers well with moisturizer. Overall, it’s a nice option if you’re dealing with dark spots, uneven tone, or excess oil, but you need to use it consistently and slowly. For beginners, I’d say start with a lower % — but if your skin is used to active ingredients, this works well.🥹