Method for waving or hair straightening product and usable for this purpose

THE INVENTION IS TO A PROCESS FOR WAVING OR RELAXING A HAIR IN THE LEAVING IN PACKAGED FORM. FROM THE METHOD, ON MET THIS HAIR IN CONTACT WITH A COMPOSITION CONTAINING REDUCING AGENT AND A SURFACTANT ANIONIC; TREATY ON NEXT HAIR WITH A COMPOSITION CONTAINING AT LEAST ONE PRODUCT CATIONIC POLYMER WHICH IS PARTICULARLY INSOLUBLE COMPLEX WITH ANIONIC SURFACTANT IN THE PRESENCE OF THE HAIR. THE INVENTION APPLY TO FIELD OF HAIRDRESSER .