Niacinamide, also known as Vitamin B3, nicotinamide, nicotinic acid amide, or 3-pyridinecarboxamide is a water-soluble vitamin that plays an important role in supporting multiple processes within the skin. It is a multifunctional ingredient that can support the skin barrier (making it ideal for dry skin), brighten, and reduce signs of congestion by reducing the appearance of surface sebum. It has been investigated for it's multiple skin benefits at concentrations varying from 0.2% up to 20%.