Device with counter-form for cleansing the hair by ultrasound

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.