US Patent 7815901 Hair treatment method

Disclosed herein is a method for treating keratinous fibers comprising coating the keratinous fibers with a reducing agent, rinsing the keratinous fibers, coating the keratinous fibers with a cosmetic composition comprising at least one non crystalline or semi-crystalline fixing polymer, and/or at least one cerid, and/or at least one sterid, raising the temperature of the keratinous fibers, and coating the keratinous fibers with an oxidizing agent. This method may make it possible to achieve a hair style with an excellent hold which is durable over time.