The current invention relates to a process for hair treatment comprising the step of applying onto hair composition comprising a cationic polymer and an oil, wherein the hair comprises damaged hair and optionally virgin hair, and the cationic polymer is a double modified cationic guar comprising cationic modifying groups, preferably comprising a group of formula —N+Me3, and non ionic modifying groups being C3-C22 alkyl or hydroxyalkyl groups.
