Abstract: A method of producing a retinyl ester compound comprising subjecting a composition comprising retinyl or a retinyl ester and a fat or oil of animal or vegetable origins to enzyme catalysed trans-esterification in solvent free conditions to produce a retinyl ester.

Abstract: A personal care product is provided which includes a package filed with a personal care composition and instructions printed on or associated with the package indicating topical use of the composition on skin for purposes of controlling the signs of aging. The composition includes a quaternary ammonium compound selected from (a) salts of hydroxypropyltri(C1-C3 alkyl)ammonium mono-substituted mono-saccharide; (b) salts of hydroxypropyltri(C1-C3 alkyl)ammonium mono-substituted polyols, the salts having a cation of an average molecular weight no higher than about 450 and the salt having a Tg no higher than about 10° C.; (c) dihydroxypropyltri(C1-C3 alkyl)ammonium salts; (d) chlorohydroxypropyltri(C1-C3 alkyl)ammonium salts; and (e) mixtures thereof.