5 Temel Unsurları için NIACINAMIDE SERUM
“Generally speaking, niacinamide is a very light ingredient and doesn’t cause irritation to skin,” explains Dr Desai. “Its concentration can vary across products, though most formulations sit between 5% and 10%.”Dr. Barbara Sturm’s The Better B may have the highest price tag of this list, but to be fair, it does pack in plenty of benefi