Suggested is a non-therapeutic use of a composition comprising a compound of formula (I)whereinR and R independently of one another denote hydrogen, hydroxyl, a linear or branched OC1-C4-alkyl group, or optionally R and R form together a methylenedioxy group resulting in a 3,4-methylendioxyphenyl residue and R" denotes a linear or branched C1-C9 alkyl group or A, wherein A denoteswith X, Y and Z being independently of one another hydrogen, hydroxyl, an linear or branched C1-C4-alkyl group, or a linear or branched OC1-C4-alkyl group,as stimulator for the biosynthesis of hyaluronan in human tissue or skin or hair.
