The present invention relates to a composition which can be used in particular for eye makeup and which comprises deoxyribonucleic acid and at least one wax. The present invention also relates to a process for the preparation of the cosmetic composition and to a method of using the latter. Method for lengthening and curving the eyelashes comprising applying to the eyelashes a composition comprising deoxyribonucleic acid or an inorganic or organic salt thereof, and at least one wax.