... wave produce heat into deep skin 2.face lifting&tightening 3.anti-aging RF face lift skin rejuvenation beauty equipment(JB-7510) ... rapid movement, vibration or attrition, then produce heat energy. At same time, under effect of polarized molecule resonance, it heats ... produce too much new collagen, then tighten neck skin, face lift, skin lift around eyes, improve drooping and slack nose wrinkle, tighten ...