Dexpanthenol, also known as pantothenol, is a derivative of pantothenic acid, which is a form of vitamin B5. Dexpanthenol is commonly used in skincare and haircare products for its moisturizing and soothing properties. When applied topically, dexpanthenol is converted into pantothenic acid, which is an essential component of coenzyme A, a molecule involved in various metabolic processes in the body.