The present invention concerns the cosmetic use, by oral administration, of petroselinic acid or of a combination of active ingredients comprising at least petroselinic acid and at least one compound chosen from zinc, taurine, one of the salts of same, lycopene and the mixtures thereof, and preferably at least taurine or zinc gluconate and, more preferably still, at least taurine and zinc gluconate, with the aim of fighting against aesthetic disorders of the body figure linked to modifications in the adipose tissue.