The invention relates to novel eucomic acid (2-(4-hydroxybenzyl)malic acid) derivatives or plant extracts comprising such derivatives, and also to cosmetic or dermatological compositions containing these compounds or these extracts, and to cosmetic care methods using said compositions. The invention relates in particular to compounds characterized in that they are represented by formula (I) below: (I) in which, with the proviso that R1, R2 and R3 are not simultaneously a hydrogen atom, R1 and R3 each independently represent a hydrogen atom or a saturated or unsaturated, preferably C1-C12, hydrocarbon-based chain comprising an aromatic group, preferably a phenyl, said aromatic group being preferably substituted with a group comprising a sugar, preferably a monosaccharide or disaccharide, said chain optionally also comprising one or more heteroatoms preferably chosen from O, S and N, and R2 represents a hydrogen atom or a sugar, preferably a monosaccharide or disaccharide, said sugar being optionally substituted, in particular with a residue comprising a saturated or unsaturated, preferably C1-C12, hydrocarbon-based chain itself comprising an aromatic group, preferably a phenyl, said hydrocarbon-based chain optionally also comprising one or more heteroatoms preferably chosen from O, S and N.L'invention concerne de nouveaux dérivés de l'acide eucomique (acide 2- (4-hydroxybenzyl)-malique) ou des extraits de plante comprenant de tels dérivés, ainsi que des compositions cosmétiques ou dermatologiques renfermant ces composés ou ces extraits, et des méthodes de soin cosmétique utilisant lesdites compositions. L'invention concerne en particulier des composés caractérisés en ce qu'ils sont représentés par la formule (I) suivante : (I) dans laquelle sous réserve que Ri, R2 et R3 ne soient pas simultanément un atome d'hydrogène, Ri et R3 représentent chacun indépendamment un atome d'hydrogène ou une chaîne hydrocarbonée, de préférence en Q-Ci2, saturée ou insaturée, comprenant
