Disclosed herein are methods of making up and/or enhancing the appearance of a keratinous substrate comprising (1) forming a film on the keratinous substrate by applying to said keratinous substrate (a) a first cosmetic composition comprising at least one polyvinyl alcohol-styrylpyridinium polymer and (b) a second cosmetic composition comprising at least one complexing agent, and (2) exposing the film to radiation chosen from UV and visible light radiation.