A process of solubilizing a fat-soluble ethereal perfume oil in a clear, stable, aqueous or aqueous-alcoholic solution comprising adding water or an alcohol-water mixture to a concentrate of said perfume oil and a hydroxyalkyl ether-ethoxylate of the formula ##STR8## wherein R1 and R2 independently of each other are a member selected from the group consisting of alkyl having 1 to 24 carbon atoms,