Photoprotective compositions comprising a dibenzoylmethane derivative, a merocyanine compound and a compound capable of accepting the triplet excited level energy of the dibenzoylmethane compound

Photoprotective composition for topical use, characterized in that it comprises, in a cosmetically acceptable medium:

• (i) one or more dibenzoylmethane derivative compounds chosen from those of formula (I) below, and/or mixtures thereof:
• in which formula (I):
• R1, R4, R5 and R6 represent, independently of one another, a hydrogen atom, a hydroxyl radical, a linear or branched C1-C4 alkyl radical or a linear or branched C1-C4 alkoxy radical, and
• R2 and R3 represent, independently of one another, a hydrogen atom, a hydroxyl radical, a linear or branched C1-C4 alkyl radical or a linear or branched C1-C4 alkoxy radical, or form, with the 2 carbon atoms of the covalent bonds C—R2 and C—R3, a 5- or 6-membered heterocycle optionally substituted with a linear or branched C1-C4 hydrocarbon-based chain;
• (ii) one or more merocyanine compounds chosen from those of formula (II) below, the tautomeric forms thereof, the geometric isomers E/E or E/Z thereof;
• and/or mixtures thereof:
• in which formula (II), R represents a linear or branched C1-C22 alkyl, C2-C22 alkenyl or C2-C22 alkynyl radical, a C3-C22 cycloalkyl radical or a C3-C22 cycloalkenyl radical, said radicals possibly being interrupted with one or more oxygen atoms;
• and
• (iii) one or more compounds capable of accepting the triplet excited level energy of said dibenzoylmethane derivative compound(s) (i).