Hair treatment method

Abstract

The present invention provides a method of treating hair, the method comprising the following steps: applying a composition to the hair, the composition comprising one or more active ingredients selected from the following: hair conditioning agents; reducing agents; organic or inorganic bases; hair dyes; abrasive solid particles; and moisturizing agents; and combing the hair using a motor-driven combing device ( 10 ) comprising spikes that are driven in an oscillating motion.

1 . A method for treating hair, the method comprising:
 applying a composition to the hair,   combing the hair using a motor-driven combing device,   wherein   the composition comprises at least one active ingredient selected from the group consisting of a hair conditioning agent, a reducing agent, an organic or inorganic base, a hair dye, an abrasive solid particle, and a moisturizing agent, and   the motor-driven combing device comprises a flexible diaphragm carrying spikes in contact with the hair, and a drive mechanism enabling the flexible diaphragm to be deformed periodically to generate an oscillating movement of the spikes.   
     
     
         2 . The method according to  claim 1 , wherein the hair is combed by the motor-driven device after applying some of the composition to the hair. 
     
     
         3 . The method according to  claim 1 , wherein the hair is combed by the motor-driven device before applying some of the composition to the hair. 
     
     
         4 . The method according to  claim 1 , wherein a frequency of oscillation of the flexible diaphragm is from 0.5 Hz to 200 Hz. 
     
     
         5 . The method according to  claim 1 , wherein an envelope surface defined by free ends of the spikes is concave towards scalp with a radius of curvature that varies with deformations of the flexible diaphragm. 
     
     
         6 . The method according to  claim 1 , wherein a travel axis of the flexible diaphragm is perpendicular to scalp at least while combing base of hair. 
     
     
         7 . The method according to  claim 1 , wherein the spikes are made from a thermoplastic material. 
     
     
         8 . The method according to  claim 1 , wherein the composition comprises at least one hair dye selected from the group consisting of a synthetic direct dye, a natural dye, and an oxidation dye precursor. 
     
     
         9 . The method according to  claim 1 , wherein the composition comprises at least one reducing agent selected from the group consisting of phosphine, an alkaline sulfite, an alkaline bisulfite, and a thiol. 
     
     
         10 . The method according to  claim 1 , wherein the composition comprises at least one organic or inorganic base selected from the group consisting of an alkali or alkaline-earth hydroxide, a transition metal, and an organic hydroxide. 
     
     
         11 . The method according to  claim 1 , wherein the composition comprises at least one hair conditioning agent selected from the group consisting of a non-silicone cationic polymer, a non-silicone cationic surfactant, a silicone, a linear or branched C8-C30 hydrocarbon, a linear or branched C8-C30 fatty alcohol, an ester of a C8-C30 fatty acid and a C1-C30 mono-alcohol or polyol, a ceramide, and a ceramide analog. 
     
     
         12 . The method according to  claim 1 , wherein the composition comprises at least one abrasive solid particle selected from the group consisting of a natural material and a synthetic material. 
     
     
         13 . The method according to  claim 1 , wherein the composition comprises at least one moisturizing agent selected from the group consisting of a urea, a urea derivative, and a polyol. 
     
     
         14 . The method according to  claim 1 , wherein said combing lasts for a period of from 1 minute to 5 minutes. 
     
     
         15 . The method according to  claim 1 , wherein
 the active ingredient is more than 0.001% by weight relative to a total composition weight,   the active ingredient is applied alone or with other ingredients, and   when the active ingredient is applied with other ingredients, the active ingredient optionally is up to 50% of the total composition weight.   
     
     
         16 . The method according to  claim 1 , wherein the composition comprises an abrasive solid particle which is a natural material of mineral or vegetable origin.