Dexpanthenol is an alcohol derivative of pantothenic acid, a component of the B complex vitamins and an essential component of a normally functioning epithelium. Dexpanthenol is enzymatically cleaved to form pantothenic acid, which is an essential component of Coenzyme A, which acts as a cofactor in many enzymatic reactions that are important for protein metabolism in the epithelium[A32373]. Due to its good penetration and high local concentrations, dexpanthanol is used in many topical products, such as ointments and lotions for treatment of dermatological conditions to relieve itching or promote healing. Dermatological effects of the topical use of dexpanthenol include increased fibroblast proliferation and accelerated re-epithelialization in wound healing. Furthermore, it acts as a topical protectant, moisturizer, and has demonstrated anti-inflammatory properties [A32377]. Dexpanthenol is also available as a racemic mixture containing both the dextrorotatory form (dexpanthenol) and the levorotatory form (levopanthenol) as [DB11204]. While pantothenic acid is optically active, only the dextrorotatory form (dexpanthenol) is biologically active.