Summary "Cosmetic or dermatological composition, non-therapeutic process and cosmetic process" The present invention is directed to a cosmetic or dermatological composition comprising, on a physiologically acceptable support: a) at least one oil phase, and b) at least one merocyanine compound of formula (i) below, and also their isomeric and / and / or e / z- forms: (i) wherein: r is a C1-C22 alkyl group, a C2-C22 alkenyl group, an alkynyl group with c2-c22, a c3-c22 cycloalkyl group or a c3-c22 cycloalkenyl group, and said groups may be interrupted by one or more o, and c) at least one compound is a lipophilic benzotriazole uv filter and / or the bis compound -resorcinyl triazine; and said composition contains less than 2% cyclohexasiloxane relative to the total weight of the composition when it contains at least one lipophilic benzotriazole UV filter. The present invention also relates to a non-therapeutic cosmetic process for the care and / or makeup of keratin matter comprising applying on the surface of the keratin matter at least one composition as defined above, and in particular to limit it. darkening of the skin and / or improving the color and / or uniformity of the complexion; prevent and / or treat the signs of aging of a keratin material.resumo “composição cosmética ou dermatológica, processo não terapêutico e processo cosmético” a presente invenção trata de uma composição cosmética ou dermatológica que compreende, em um suporte fisiologicamente aceitável: a) pelo menos uma fase oleosa, e b) pelo menos um composto merocianina de fórmula (i) a seguir, e também suas formas isoméricas geométricas e/e- ou e/z-: (i) na qual: r é um grupo alquila com c1-c22, um grupo alquenila com c2-c22, um grupo alquinila com c2-c22, um grupo cicloalquila com c3-c22 ou um grupo cicloalquenila com c3-c22, e os referidos grupos podem ser interrompidos por um ou mais o, e c) pelo menos um composto um filtro uv benzotriazol lipófilo e/ou o composto bis-resorcinil triazina; e a