Vitamin B3 (Vitamin PP) is a very stable vitamin that offers a variety of benefits. It is a component of NAD and NADP, essential coenzymes in ATP production, and also plays a central role in DNA repair and skin homeostasis. It is a major niacin derivative and is mainly found in many organisms. Nowadays, it is widely used as a natural cosmetic ingredient in skin and hair care products and is divided into medicagrade and cosmetic grade.