LED offer a totally natural, non-ablative method for skin rejuvenation.The light from the LED interacts with cells and stimulates them to produce new collagen and elastin bio light therapy.Studies confirm that the same LED energy can be used to inhibit co-llagen formation,by manipulating the wavelengths, cells can be turned on and off. Yellow light are used for photo-rejuvenation. Blue light are used in the treatment of acne. Red light are used for photo dynamic therapy, Green Light reduce melanin cell,decreased pigment Purple light: With wave length of 690nm, the purple light is a dual-band light formed by red and blue light. thus the purple light has two phototherapy effects. it is effectively in reducing acne. Ultramarine light: With wave length of 490nm, this light can promote skin cell activity and skin tissues metabolism. . White light: With wave length of 510nm, the white light can penetrate deeply into skin quicken skin metabolism and smoothen wrinkles.Input: AC100-240V Output: DC12V 3A Power: 32W Size: 480*232*305mm weight: 2.29kg