The invention relates to the cosmetic use, by oral administration, of a combination of active agents including petroselinic acid and zinc, in particular the salts of Zn (II) wherein said salts are preferably complexed by one or more (poly)hydroxyacids such as zinc gluconate, for improving hair quality and for preventing and controlling the microinflammation of hair follicles, in particular for controlling hair aging in men over the age of 30 or in women.
