Method for treating hair fibers

Abstract

A hair fiber treating method not containing a fixing step, comprising, applying to the hair fibers at least one reducing composition, free of ceramide, comprising at least one reducing agent, wherein the at least one reducing agent is chosen from thiols and is present in an amount of less than 3% by weight, relative to the total weight of the at least one reducing composition, when the at least one reducing composition does not comprise any aminothiol compound, but when the at least one reducing composition does comprise at least one aminothiol compound it is present in an amount of less than 5% by weight, relative to the total weight of the at least one reducing composition; raising the temperature of the hair fibers using a heating iron at temperature of at least 60° C., wherein the temperature of the hair fibers are raised before or after the hair fiber are optionally rinsed.

1 . A method for treating hair fibers comprising, 
 applying to the hair fibers at least one reducing composition, free of ceramide, comprising at least one reducing agent, wherein the at least one reducing agent is chosen from thiols and wherein 
 when the at least one reducing composition does not comprise at least one aminothiol compound, the at least one reducing agent is present in an amount of less than 3% by weight, relative to the total weight of the at least one reducing composition,  
 when the at least one reducing composition does comprise at least one aminothiol compound, the at least one reducing agent is present in an amount of less than 5% by weight, relative to the total weight of the at least one reducing composition, and  
   applying a heating iron to the hair fibers to raise the temperature of said hair fibers, wherein said heating iron has a temperature of at least 60° C., and wherein the heating iron is applied before or after the hair fibers are optionally rinsed, and    wherein the method does not include a fixing step.    
   
   
       2 . The method according to  claim 1 , wherein, when the at least one reducing composition does not comprise at least one aminothiol compound, said at least one reducing composition has a pH of less than or equal to 9.  
   
   
       3 . The method according to  claim 1 , wherein the at least one reducing composition does not comprise dithiodiglycolic acid or any salt thereof.  
   
   
       4 . The method according to  claim 1 , wherein the temperature of the heating iron ranges from 60° C. to 250° C.  
   
   
       5 . The method according to  claim 4 , wherein the temperature of the heating iron ranges from 120° C. to 220° C.  
   
   
       6 . The method according to  claim 1 , wherein when the at least one reducing composition does not comprise at least one aminothiol, the at least one reducing agent is present in an amount ranging from 0.1% to 3% by weight, relative to the total weight of the at least one reducing composition.  
   
   
       7 . The method according to  claim 6 , wherein the at least one reducing agent is present in an amount ranging from 0.5% to 3% by weight relative to the total weight of the at least one reducing composition.  
   
   
       8 . The method according to  claim 1 , wherein when the at least one reducing composition comprises at least one aminothiol compound, the at least one reducing agent is present in an amount ranging from 0.1 to 5% by weight, relative to the total weight of the at least one reducing composition.  
   
   
       9 . The method according to  claim 8 , wherein the at least one reducing agent is present in an amount ranging from 0.5 to 4% by weight, relative to the total weight of the at least one reducing composition.  
   
   
       10 . The method according to  claim 1 , wherein the at least one reducing composition is applied to wet and clean hair fibers.  
   
   
       11 . The method according to  claim 1 , further comprising leaving the at least one reducing composition on the hair fibers for a time period ranging from 5 to 60 minutes before heating.  
   
   
       12 . The method according to  claim 11 , further comprising leaving the at least one reducing composition on the hair fibers for a time period ranging from 5 to 30 minutes before heating.  
   
   
       13 . The method according to  claim 1 , further comprising not rinsing the hair fibers before heating the hair fibers.  
   
   
       14 . The method according to  claim 1 , further comprising partially pre-drying the hair fibers before heating the hair fibers.  
   
   
       15 . The method according to  claim 1 , wherein the thiols are chosen from aminothiols and non-aminated thiols.  
   
   
       16 . The method according to  claim 15 , wherein the aminothiols are chosen from cysteine and derivatives thereof and cysteamine and derivatives thereof.  
   
   
       17 . The method according to  claim 15 , wherein the non-aminated thiols are chosen from thiolactic acid and esters thereof, thioglycolic acid and esters thereof, and thioglycerol.  
   
   
       18 . The method according to  claim 15 , wherein the thiols are in salts form.  
   
   
       19 . The method according to  claim 1 , wherein the at least one reducing composition comprises at least one solvent chosen from water, C 1 -C 6  alcohols, polyhydric alcohols, benzyl alcohol, polyol ethers, C 2 -C 6  esters, N-methylpyrrolidone (NMP), and C 3 -C 6  cetones.  
   
   
       20 . The method according to  claim 19 , wherein the C 1 -C 6  alcohols are alkanols chosen from ethanol, propanol, and isopropanol.  
   
   
       21 . The method according to  claim 20 , wherein polyhydric alcohols are chosen from propyleneglycol, pentanediol, and glycerine.  
   
   
       22 . The method according to  claim 1 , wherein the at least one reducing composition comprises at least one cosmetic additive chosen from volatile and non volatile, linear and cyclic silicones; cationic, non ionic, anionic, and amphoteric polymers; peptides and derivatives thereof; protein hydrolyzates; waxes; swelling agents and penetrating agents; agents that are able to increase the efficiency of the at least one reducing agent; anionic, cationic, non ionic, amphoteric, and zwitterionic surfactants; active agents combating hair loss; anti-dandruff agents; natural and synthetic, associative and unassociative thickeners; suspension agents; sequestering agents; opacifying agents; dyes; sunscreen agents; vitamins and provitamins; fatty acids; fatty alcohols; mineral, vegetable and synthetic oils; and fragrances and preserving agents.  
   
   
       23 . The method according to  claim 22 , wherein the cationic polymers are chosen from hexadimethrine chloride and dimethyldiallylammonium chloride homopolymers and copolymers.  
   
   
       24 . The method according to  claim 1 , wherein the at least one reducing composition is provided in a form chosen from an optionally thickened lotion, a cream, a gel, and a foam.  
   
   
       25 . A method for treating hair fibers to change the shape of the hair fibers without excessively altering the hair color and/or without excessively damaging the hair fibers, said method comprising: 
 applying to the hair fibers at least one reducing composition, free of ceramide, comprising at least one reducing agent, wherein the at least one reducing agent is chosen from thiols and wherein 
 when the at least one reducing composition does not comprise at least one aminothiol compound, the at least one reducing agent is present in an amount of less than 3% by weight, relative to the total weight of the at least one reducing composition,  
 when the at least one reducing composition does comprise at least one aminothiol compound, the at least one reducing agent is present in an amount of less than 5% by weight, relative to the total weight of the at least one reducing composition, and  
   applying a heating iron to the hair fibers to raise the temperature of said hair fibers, wherein said heating iron has a temperature of at least 60° C., and wherein the heating iron is applied before or after the hair fibers are optionally rinsed, and    thus changing the shape of the hair fibers without excessive alteration of the hair color and/or without excessive damage to the hair fibers, and without a fixing step.