The present invention relates to the cosmetic use of jasmonic acid derivatives of formula (I)in which:R1 represents a radical COOR3, R3 denoting a hydrogen atom or a C1-C4 alkyl radical, optionally substituted with one or more hydroxyl groups；R2 represents a linear saturated or unsaturated hydrocarbon-based radical containing from 1 to 18 carbon atoms, or a branched or cyclic saturated or unsaturated hydrocarbon-based radical containing from 3 to 18 carbon atoms； and also an optical isomer thereof and/or a corresponding salt thereof, in a composition for caring for and/or making up keratin fibres, in particular human keratin fibres, for the purpose of inducing and/or stimulating the growth of the keratin fibres and/or of halting their loss and/or increasing their density.
