DL-Panthenol(Provitamin B5) is the Pro-vitamin of D-Pantothenic acid (Vitamin B5) for using in hair, skin and nail care products. DL-Panthenol is a racemic mixture of D.Panthenol and L-Panthenol.DL Panthenol, is a well known hair conditioner which restores shine & luster to dull hair while also improve tensile strength. Additional.DL. Panthenol is a skin conditioning agent & effective moisturizer.