Cosmetic or dermatological composition in emulsion form, comprising, in a physiologically acceptable support: a) at least one aqueous phase and b) at least one oily phase, and c) at least one merocyanine compound of formula or one of the E/E- or E/Z-geometrical isomer forms thereof: in which: R is a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, a C 2 -C 22 alkynyl group, a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, the said groups possibly being interrupted with one or more O, and d) at least one emulsifying system containing at least one alkali metal salt of a phosphoric acid ester of a fatty alcohol of formula below: (R'O)--P=O--(O - M) 2 in which R' represents a saturated, linear or branched C 8 -C 22 alkyl group and M represents an alkali metal; the said composition containing less than 5% by weight of cyclopentadimethylsiloxane relative to the total weight of the composition, excluding the following W/O emulsion in which the amounts of the ingredients are expressed as percentage of weight relative to the total weight of the composition: Phase Ingredients %wt A Glycerol 5 EDTA 0,1 POTASSIUM CETYL PHOSPHATE 1 Deionized Water qsp 100 Triethanolamine 0,3 Preservatives 1,2 B1 PHENETHYL BENZOATE (and) BENZOIC ACID 30 Preservatives 0,25 STEARIC ACID 1,5 GLYCERYL STEARATE (and) PEG-100 STEARATE 1 Cetyl alcohol 0,5 Cetearyl alcohol and cetearyl glucoside 2 POLY DIMETHYLSILOXANE (VISCOSITY: 350 mm 2 /s (350 CST)) 0,5 TRIETHANOLAMINE 0,45 ethyl -cyano(3-[(3-methoxypropyl)amino]cyclo hex-2-en-1-ylidene)ethanoate 2 Isohexadecane 1 ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER 0,2 B2 Xanthan gum 0,2 Cyclopentadimethylsiloxane 5 a) at least one aqueous phase and b) at least one oily phase, and c) at least one merocyanine compound of formula or one of the E/E- or E/Z-geometrical isomer forms thereof: in which: R is a C 1 -C 22 alkyl group, a C 2 -C 22 alkenyl group, a C 2 -C 22 alkynyl group, a C 3 -C 22 cycloalkyl group or a C 3 -C 22 cycloalkenyl group, the said groups possibly being interrupted with one or more O, and d) at least one emulsifying system containing at least one alkali metal salt of a phosphoric acid ester of a fatty alcohol of formula below: (R'O)--P=O--(O - M) 2 in which R' represents a saturated, linear or branched C 8 -C 22 alkyl group and M represents an alkali metal; the said composition containing less than 5% by weight of cyclopentadimethylsiloxane relative to the total weight of the composition, excluding the following W/O emulsion in which the amounts of the ingredients are expressed as percentage of weight relative to the total weight of the composition: Phase Ingredients %wt A Glycerol 5 EDTA 0,1 POTASSIUM CETYL PHOSPHATE 1 Deionized Water qsp 100 Triethanolamine 0,3 Preservatives 1,2 B1 PHENETHYL BENZOATE (and) BENZOIC ACID 30 Preservatives 0,25 STEARIC ACID 1,5 GLYCERYL STEARATE (and) PEG-100 STEARATE 1 Cetyl alcohol 0,5 Cetearyl alcohol and cetearyl glucoside 2 POLY DIMETHYLSILOXANE (VISCOSITY: 350 mm 2 /s (350 CST)) 0,5 TRIETHANOLAMINE 0,45 ethyl -cyano(3-[(3-methoxypropyl)amino]cyclo hex-2-en-1-ylidene)ethanoate 2 Isohexadecane 1 ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER 0,2 B2 Xanthan gum 0,2 Cyclopentadimethylsiloxane 5