... ,skin tightening 4.40KHZ Ultrasonic WY-B32 tripolar radio frequency/cavitation machine I Theory:The Cavitation&Vacuum ---slimming, body ... RF ---skin tightening, skin lifting, wrinkle removal: High frequency wave permeates epidemis and take effect on the collagen- ... of fat cells 4. Facial RF handle --Facial wrinkle elimination, tightening and lifting In the high-frequency of 450khz, this electric ...