The present invention relates to an in particular cosmetic or dermatological compositions comprising, in a physiologically acceptable support: •a) at least one merocyanine of formula (1) or (2) (1), (2) •b) at least one oily phase comprising at least one polyalkylene glycol of formula (4): (4) and to their use for caring for and/or making up a keratin material.R1—(O—CH2—CH2)x—(O—CH(CH3)—CH2)y—O—R2 (4)