Use of dedifferentiated plant cells from a plant of Rosa species, or an extract or a lyophilizate of the cells, e.g. for caring aged skin or aged hair, and preventing and/or reducing and/or treating alopecia, and whitening and weak hair

Cosmetic use of dedifferentiated plant cells from a plant of Rosa sp., or an extract or a lyophilizate of cells, as an active agent, for caring aged skin or aged hair, is claimed. An independent claim is included for a cosmetic composition comprising either, as active agent, the dedifferentiated plant cell, or the dedifferentiated plant cell derived from a Lancome rosebush, or an extract or a lyophilizate of the cell, where the dedifferentiated plant cells are obtained by placing plant cells of Rosa sp. in culture in a culture medium comprising at least ammonium nitrate, potassium nitrate, calcium chloride, magnesium sulfate, monopotassium phosphate, manganese(II) sulfate, zinc sulfate heptahydrate, potassium iodide, sodium molybdate, cupric sulfate, ferrous sulfate heptahydrate, myoinositol, nicotinic acid, pyridoxine hydrochloride, thiamine hydrochloride or sucrose, and optionally kinetin, EDTA disodium dihydrate and/or naphthaleneacetic acid. ACTIVITY : Dermatological; Nootropic; Endocrine-Gen. MECHANISM OF ACTION : None given. La présente invention concerne l'utilisation cosmétique de cellules végétales dédifférenciées d'une plante de l'espèce Rosa sp., d'un extrait ou d'un lyophilisat de celles-ci, à titre d'agent actif pour le soin de la peau âgées ou des cheveux âgés.