Ethyl Hexanediol Middel Solvent No known benefits Ethyl Hexanediol description A synthetic, viscous alcohol that functions as a solvent and can also be a fragrance ingredient. Considered safe for use in cosmetics in concentrations up to 5%. Ethyl hexanediol is most commonly used in haircare products and cleansers. Interestingly, higher amounts of this ingredients are sometimes used as an insect repellant. Related ingredients: Alcohol