Summary "cosmetic or dermatological composition and non-therapeutic cosmetic process" The present invention relates to a cosmetic or dermatological composition comprising, on a physiologically acceptable carrier: (a) at least one oil phase and (b) at least one compound of merocyanine corresponding to formula (1) below and also the geometric isomer forms and / and or e / z thereof: wherein: r is a c1-c22 alkyl group, a c2-c22 alkenyl group, a c2-alkynyl group c22, a c3-c22 cycloalkyl group or a c3-c22 cycloalkenyl group, said groups being possibly substituted by one or more o, and (c) at least one insoluble organic UV blocking agent and / or a insoluble inorganic UV block. The present invention also relates to: (i) A non-therapeutic cosmetic process for the care and / or makeup of a keratin material comprising applying to the surface of said keratin material at least one composition according to the invention as defined. above； (ii) a non-therapeutic cosmetic process for limiting skin darkening and / or enhancing complexion color and / or uniformity comprising applying keratin material to the surface of at least one composition as defined above； (iii) a non-therapeutic cosmetic process for preventing and / or treating signs of aging of a keratin material comprising surface application of the keratin material of at least one composition as defined above.resumo “composição cosmética ou dermatológica e processo cosmético não terapêutico” a presente invenção refere-se a uma composição cosmética ou dermatológica que compreende, em um suporte fisiologicamente aceitável: (a) pelo menos uma fase oleosa e (b) pelo menos um composto de merocianina que corresponde à fórmula (1) abaixo e também as formas de isômero geométrico e/e ou e/z do mesmo: em que: r é um grupo alquila c1-c22, um grupo alquenila c2-c22, um grupo alquinila c2-c22, um grupo cicloalquila c3-c22 ou um grupo cicloalquenila c3-c22, sendo que os ditos grupos são possivelmente substituídos por um ou mais o, e (c)
