Abstract: The invention relates to compositions based on a cationic polymer and a fluorine derivative for the treatment of keratinic material. The cationic polymer is a substantive polymer and the fluorine derivative has the formula Gf--Z or (Gf--O).sub.2 --PO.sub.2 H wherein Z represents --COOH, --SO.sub.3 H, --OSO.sub.3 H, --OPO.sub.2 H and --OPO.sub.3 H.sub.2 and Gf represents ##STR1## wherein m ranges from 1 to 20, s is equal to 0 or 1, t ranges from 0 to 20 and R.sub.1 is alkyl having 1-20 carbon atoms. These compositions permit principally to remedy for a prolonged period of time the problem of the re-appearance of an oily appearance of hair.