A cosmetic or dermatological composition comprising at least one gradient
copolymer comprising at least two different monomers, displaying a mass
polydispersity index (Ip) less than or equal to 2.5 and for example,
additionally a low composition polydispersity. A cosmetic or
dermatological method for make-up or care of keratinous substances,
notably the skin of the body or of the face, the nails, the hair and/or
the eyelashes, comprising application of a cosmetic composition as
defined above on the said substances.