Device with counter-form for cleansing the hair by ultrasound

Abstract

The invention relates to a cosmetic device for cleansing the hair, comprising: an ultrasonic transmitter, a handpiece comprising a probe cooperating with a counter-form so as to pinch the lock of hair between a bearing surface of the counter-form and a distal outer surface of the probe. It also relates to the cosmetic method for cleansing the hair that uses said device, preferably with a cleansing composition comprising at least one surfactant.

1 . A cosmetic device for cleansing the hair, comprising:
 an ultrasonic transmitter, having an ultrasonic transducer powered by a current generator and configured to generate ultrasonic vibrations,   a handpiece comprising a probe coupled to the ultrasonic transmitter so as to transmit the ultrasonic vibrations generated by the transducer to a lock of hair to be treated, the probe extending along a longitudinal axis between a proximal outer surface and a distal outer surface,   wherein the handpiece also comprises a counter-form provided with a bearing surface, so as to at least partially receive the lock of hair to be treated, the probe cooperating with the counter-form so as to pinch the lock of hair between the bearing surface of the counter-form and the distal outer surface of the probe, and   the counter-form delimits a receptacle of which the bottom defines the bearing surface.   
     
     
         2 . The device according to  claim 1 , wherein the probe has an axial guiding channel passing through it. 
     
     
         3 . The device according to  claim 1 , wherein the probe has a shape that flares in the direction of its distal end. 
     
     
         4 . The device according to  claim 1 , wherein the bearing surface of the counter-form and the distal outer surface of the probe are parallel. 
     
     
         5 . The device according to  claim 1 , wherein the handpiece comprises a first comb or a first brush disposed next to the probe and oriented towards the counter-form. 
     
     
         6 . The device according to  claim 1 , wherein the counter-form comprises a second comb or a second brush  444  disposed on the outside of the bearing surface and oriented towards the probe. 
     
     
         7 . The device according to  claim 1 , wherein the counter-form is equipped with a groove formed in its inner contour and disposed, in the position of use of the device, between the first comb or the first brush and the second comb or the second brush. 
     
     
         8 . The device according to  claim 1 , wherein the ultrasonic frequency used by the transducer ranges from 16 kHz to 10 MHz and preferably from 16 kHz to 60 kHz. 
     
     
         9 . The device according to  claim 1 , wherein it comprises a supply duct connected to a mixer connected to a reservoir for a concentrated cleansing solution. 
     
     
         10 . The device according to  claim 1 , wherein the concentrated cleansing solution comprises at least one surfactant, which is preferably anionic. 
     
     
         11 . The device according to  claim 1 , wherein it comprises a spent cleansing composition evacuation duct connected to the counter-form. 
     
     
         12 . The device according to  claim 1 , wherein it comprises a unit for treating and recycling a spent cleansing composition. 
     
     
         13 . A cosmetic method for cleansing the hair, comprising the operations consisting in:
 (i) Providing a device according to  claim 1 ,   (ii) Pinching at least one area of a lock of hair between the bearing surface of the counter-form and the distal outer surface of the probe,   (iii) Generating ultrasound,   (iv) Where appropriate, after relative movements of said lock with respect to the probe, successively treating one or more other areas so as to clean the desired part of the lock.   
     
     
         14 . The method according to  claim 13 , comprising an operation (v) consisting in applying to the hair, during operation (iii), a metered amount of cleansing composition preferably comprising at least one surfactant, which is in particular anionic.