Photo-crosslinkable cosmetic composition in particular for coating a nail, and more particularly for making up a nail, comprising, in a physiologically acceptable medium: - at least one photo-crosslinkable compound a) corresponding to formula below: in which formula: - R 1, R 2, R 3, which may be identical or different, represent a hydrogen atom, or a C 1 -C 10, preferably C 1 alkyl group, preferably R 1 being a methyl, preferably R 2 and R 3 being a hydrogen atom, - n represents an integer between one and 10, preferably equal to 2, - the bond between α and β of the carbonyloxy is a single bond, a double bond or is a bond within a (hetero)cyclic compound comprising from 5 to 7 carbon atoms, preferably 6 carbon atoms, which (hetero)cyclic compound may be aromatic or non-aromatic, preferably aromatic, more preferably an aryl, such as a phenyl; - at least one photo-crosslinkable compound b) corresponding to formula below: in which formula: - R 1, R 2, R 3, R 4, R 5, and R 6, which may be identical or different, represent a hydrogen atom or a C 1 -C 10 alkyl chain, preferably a hydrogen atom or a methyl group, - k and l, which may be identical or different, are between 1 and 10, preferably equal to 2, - m is between 1 and 100, preferably between 5 and 50, preferably between approximately 8 and 10, - n is between 1 and 10, preferably equal to 1, - X and Y, which may be identical or different, represent a C 1 -C 20 alkyl or cycloalkyl group. - at least one photo-crosslinkable compound a) corresponding to formula below: in which formula: - R 1, R 2, R 3, which may be identical or different, represent a hydrogen atom, or a C 1 -C 10, preferably C 1 alkyl group, preferably R 1 being a methyl, preferably R 2 and R 3 being a hydrogen atom, - n represents an integer between one and 10, preferably equal to 2, - the bond between α and β of the carbonyloxy is a single bond, a double bond or is a bond within a (hetero)cyclic compound comprising from 5 to 7 carbon atoms, preferably 6 carbon atoms, which (hetero)cyclic compound may be aromatic or non-aromatic, preferably aromatic, more preferably an aryl, such as a phenyl; - R 1, R 2, R 3, which may be identical or different, represent a hydrogen atom, or a C 1 -C 10, preferably C 1 alkyl group, preferably R 1 being a methyl, preferably R 2 and R 3 being a hydrogen atom, - n represents an integer between one and 10, preferably equal to 2, - the bond between α and β of the carbonyloxy is a single bond, a double bond or is a bond within a (hetero)cyclic compound comprising from 5 to 7 carbon atoms, preferably 6 carbon atoms, which (hetero)cyclic compound may be aromatic or non-aromatic, preferably aromatic, more preferably an aryl, such as a phenyl; - at least one photo-crosslinkable compound b) corresponding to formula below: in which formula: - R 1, R 2, R 3, R 4, R 5, and R 6, which may be identical or different, represent a hydrogen atom or a C 1 -C 10 alkyl chain, preferably a hydrogen atom or a methyl group, - k and l, which may be identical or different, are between 1 and 10, preferably equal to 2, - m is between 1 and 100, preferably between 5 and 50, preferably between approximately 8 and 10, - n is between 1 and 10, preferably equal to 1, - X and Y, which may be identical or different, represent a C 1 -C 20 alkyl or cycloalkyl group. - R 1, R 2, R 3, R 4, R 5, and R 6, which may be identical or different, represent a hydrogen atom or a C 1 -C 10 alkyl chain, preferably a hydrogen atom or a methyl group, - k and l, which may be identical or different, are between 1 and 10, preferably equal to 2, - m is between 1 and 100, preferably between 5 and 50, preferably between approximately 8 and 10, - n is between 1 and 10, preferably equal to 1, - X and Y, which may be identical or different, represent a C 1 -C 20 alkyl or cycloalkyl group.