The present invention concerns the use of perfluoropolyether phosphates, inparticular perfluoropolyether diphosphates, as stabilizing agents forpolyphenols in cosmetic and/or dermatological compositions for topicalapplication, and it also concerns cosmetic and/or dermatological compositionscontaining polyphenols and optionally vitamin E and free ascorbic acid,stabilized by perfluoropolyether diphosphates.