2 Dakika Kural için NIACINAMIDE SERUM
“Generally speaking, niacinamide is a very light ingredient and doesn’t cause irritation to skin,” explains Dr Desai. “Its concentration dirilik vary across products, though most formulations sit between 5% and 10%.”Vitamin C serums, retinol, and hyaluronic acid may get a lot of attention, but there's a dark horse out there: niacinamide.