Patent ID: 8114392

Claim:
Method for smoothing keratin containing fiber comprising the steps of: (i) contacting the fiber with an aqueous composition (A) comprising at least one keratin-reducing compound, protein hydrolyzate and silicone; (ii) removing aqueous composition (A) after a reaction time of from 5 to 60 minutes; (iii) applying an aqueous composition (C) comprising at least one conditioning compound chosen from cationic polymers, quaternary ammonium compounds, silicones and protein hydrolyzates; (iv) removing aqueous composition (C) after a reaction time of from 1 second to 60 minutes; (v) drying the fibers; (vi) heating and mechanically smoothing the fibers from steps (ii), (iii), (iv) and/or (v) at a temperature of from 120 to 220° C.; (vii) contacting the fibers from step (iv) with an aqueous composition (B) comprising at least one oxidizing agent and Polyquaternium-37; and (viii) removing aqueous composition (B) after a reaction time of from 1 to 30 minutes.