Summary "Cosmetic or dermatological composition and non-therapeutic cosmetic process" The present invention relates to a cosmetic or dermatological composition in the form of a water-in-oil emulsion comprising, on a physiologically acceptable carrier: a) at least one aqueous phase and (b) at least one oil phase, and (c) at least one merocyanine compound of formula (i) or one of the isomeric geometric forms and / and or e / z of formula (i), wherein r is a group c¬1¬ -c22 alkyl, a c2-c22 alkenyl group, a c2-c22 alkynyl group, a c3-c22 cycloalkyl group or a c3-c22 cycloalkenyl group, and said groups may be interrupted with one or more oed) emulsifier comprising at least one polyoxyalkylenated glycol fatty acid ester type emulsifier polymer. The invention also relates to a non-therapeutic cosmetic process for the care and makeup of a keratin material, which comprises applying to the surface of said keratin material at least one composition according to the invention as defined above. The invention also relates to a non-therapeutic cosmetic process that limits skin darkening, improves color and / or uniformity of appearance, comprising at least applying to the surface of the keratin material at least one composition as defined above. . The invention also relates to a non-therapeutic cosmetic process for treating the aging of a keratin material comprising at least applying to the surface of the keratin material 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 na forma de uma emulsão água-em-óleo que compreende, em um suporte fisiologicamente aceitável: a) pelo menos uma fase aquosa, e b) pelo menos uma fase oleosa, e c) pelo menos um composto merocianina da fórmula (i) ou uma das formas isoméricas geométricas e/e ou e/z da fórmula (i), em que r é um grupo c¬1¬-c22 alquila, um grupo c2-c22 alquenila, um grupo c2-c22 alquini