Ultrasonic method and device for cosmetic applications
A combination of low frequency high amplitude sonic frequency vibrations and high frequency low intensity ultrasonic pressure waves are applied to cosmetic compounds and to the skin to promote improved penetration of the cosmetic compounds into the epidermis. The cosmetic applicator device includes means for generating both sonic frequency vibrations and ultrasonic pressure waves adopted to deliver cosmetic compounds into the epidermis safely without significant temperature rise in the skin. Various removable applicator and skin cleaning attachments are also disclosed, including some with ultrasound waveguide.
1. A cosmetic applicator comprising:
a) a handle portion and an applicator head portion;
b) said applicator head portion having an ultrasound transducer operative to produce non-attenuated ultrasonic pressure waves at frequencies between 20 kHz and 20 MHz; and
c) an ultrasound waveguide acoustically coupled to said ultrasound transducer operative to transmit said non-attenuated ultrasound pressure waves by direct contact with and into a skin to facilitate enhanced penetration of cosmetic compounds into said skin;
d) said handle portion having means to generate ultrasonic frequency electric signals and transmitting said electric signals to power said ultrasound transducer; and
e) a motor mounted in said handle portion to generate sonic frequency orbital vibrations in the range of about 33 to about 250 Hz of said applicator head operative to increase permeability of said skin; and
f) a conically shaped solid metal core ultrasound waveguide acoustically coupled to said ultrasound transducer, operational to focus and transmit said non-attenuated ultrasound pressure waves by direct contact with and into small restricted areas of the facial anatomy.