... waves 3) 2 BIO waves 4) LCD screen led light therapy IntroductionPhototherapy has long history, the ancient Greek, ancient ... is a kind of revolutionary cosmetology treatment program in the world nowadays. It adopts patented IPL technique, which can remove ... lot of lights of different wave-lengths, there are infrared light, visible light (imply red, orange, yellow, green, black, orchid, purple), ...