... , lip, chest, back, limb...etc. Therapy principle 1. Laser "selective treatment principle" -remove skin pigment anti-redness and hair ... wavelength killed the germs,acne treatment effectively. ApplicationsE light (IPL+RF) for hair removal, freckle removal & skin care480----1200, ... 15*50mm2E-light energy0-50J/cm2(IPL) 0-20J/cm2(RF)Pulse frequency1~4S, adjustablePulse number1~6, adjustablePulse space1~99ms ...