Patent ID: 7976831

Claim:
A method for treating hair fibers, comprising: applying to the hair fibers at least one reducing composition containing no dithiodiglycolic acid or any salt thereof or ceramide, comprising at least one reducing agent chosen from thiols and at least one cosmetic active agent, wherein: the at least one cosmetic active agent is hexadimethrine chloride present in an amount ranging from 0.1% to 30% by weight, relative to the total weight of the at least one reducing composition, and the at least one thiol is present in an amount of less than 5% by weight, relative to the total weight of the at least one reducing composition; optionally rinsing the hair fibers; increasing the temperature of the hair fibers with a heating iron at a temperature ranging from 120° C. to 220° C.; and optionally rinsing the hair fibers, wherein the method does not comprise applying to the hair fibers an oxidizing composition.