RF emits two types of high frequency waves (0.3MHz or 0.5MHz) deep into the subcutaneous tissues. The tissues vibrate, rubbing against each other, producing biological thermal energy. This thermal energy gently raises the temperature (42°C to 43°C) for vasodilation. Recovers modified cellular functions, promotes blood circulation and normalizes biology and hormonal balance. It is also effective in accelerating collagen contraction and regeneration through the stimulation of collagen layers..syi