The present invention relates to the cosmetic use of at least one compound of general formula (I):in which:R1 represents a methyl or ethyl radical;R2 represents a hydrogen atom or a methyl or ethyl radical;R3 represents a linear C1-C6 or branched C3-C6 alkyl radical, or a linear C2-C6 or branched C3-C6 alkenyl radical; andX represents ═O or —OH,as an agent for reducing and/or delaying the signs of skin ageing.