LED High-tech optical beauty instrument uses the principle of photodynamic therapy, activation deep cell and skin better metabolism. When light is absorbed by the skin light energy is converted into intracellular energy. *Red Light promotes Collagen, repairs damaged skin, anti-aging *Blue Light: Bacterial Anti-inflammatory effect, helps significantly with acne and helps to heal the breakout *Green Light: reduces skin oil secretion, effectively relieving mental stress *Yellow Light: it can improve the exchange of oxygen to cells *Purple Light: it combines red/blue lights for phototherapy efficacy, repairs acne @ acne scarring *Cyanine Light: can gradually enhance the cell energy *White Light: Penetrate the skin deep, accelerate the metabolism of the active tissue improves fine line and loose skin and brightens the skin.