[0001] The invention relates to a cosmetic ingredient, characterized in that it consists of a solution of at least one extract of karanja oil comprising pongamol (CAS 484-33-3) and karanjin (CAS 521-88-0) in at least one solvent chosen from the group of diesters having the following formula (I), or mixtures thereof: in which formula (I): n is between 0 and 19; R and R', which may be identical or different, are chosen from the group of alkyls derived from a linear or branched alcohol of empirical formula C