Method For Treating The Hair Using Steam

Abstract

A subject-matter of the present invention is a method for treating hair fibres which comprises: (i) the application to hair fibres of steam, (ii) the shaping of these hair fibres at a temperature of greater than 50° C., the application of the steam and the shaping being unconnected. The method of the present invention makes it possible in particular to obtain rapid shaping of the hair fibres while improving their cosmetic properties.

1 . Method for treating hair fibres which comprises:
 the application to hair fibres of steam by means of a device capable of generating steam,   the shaping of these hair fibres at a temperature of greater than 50° C.,   the application of the steam and the shaping being unconnected.   
     
     
         2 . Method according to  claim 1 , in which the application to hair fibres of steam is carried out by means of a device capable of generating an amount of steam greater than 5 g/min. 
     
     
         3 . Method according to  claim 1  or  2 , in which the shaping temperature is greater than 90° C., preferably between 90° C. and 230° C., preferably between 90 and 200° C. 
     
     
         4 . Method according to any one of the preceding claims, in which the shaping is carried out using a smoothing iron. 
     
     
         5 . Method according to  claim 4 , in which the smoothing is carried out in a single pass per treated lock of hair fibres. 
     
     
         6 . Method according to any one of the preceding claims, comprising a single application of steam per lock of treated hair fibres. 
     
     
         7 . Method according to any one of the preceding claims, in which the shaping is carried out after the stage of application of steam. 
     
     
         8 . Method according to  claim 7  in which the steam application is carried out solely before the step of shaping 
     
     
         9 . Method according to any one of the preceding claims, additionally comprising a stage of cosmetic treatment of the hair fibres using a composition comprising one or more cosmetic active principles. 
     
     
         10 . Method according to  claim 9 , comprising, in order, the cosmetic treatment stage, followed by the stage of application of steam and then by the stage of shaping the hair fibres. 
     
     
         11 . Method according to  claim 9 , comprising, in order, the stage of application of steam, followed by the stage of shaping the hair fibres and then by the cosmetic treatment stage. 
     
     
         12 . Method according to  claim 9 , comprising, in order, the application of the steam, followed by the cosmetic treatment stage and then by the stage of shaping the hair fibres. 
     
     
         13 . Method according to any one of  claims 9  to  11 , in which the cosmetic treatment stage is chosen from a stage of caring for the hair fibre, a stage of washing the fibres, a stage of shaping, a stage of permanent, semipermanent or temporary dyeing, a stage of permanent deformation using a reducing agent and optionally a fixative, or a stage of alkaline straightening with sodium hydroxide or with guanidine carbonate.