RF at home skin tightening machine 1)0.3Mhz/0.5Mhz 2) ... forced rapid movement, vibration or attrition, then produce heat energy. At same time, under effect of polarized molecule resonance, it heats ... -IPL,eLight,Nd:Yag Laser,RF,Cavitation,Fractional Laser--------------------------------------------------------------------------- RF at home skin tightening machine