“Generally speaking, niacinamide is a very light ingredient and doesn’t cause irritation to skin,” explains Dr Desai. “Its concentration kişi vary across products, though most formulations sit between 5% and 10%.” Oily skin types, listen up (and feel free to throw away your blotting papers while you’re at it). https://centella-faydalar59146.blog5.net/71895506/en-kuralları-of-niacinamide-serum