led pdt machine skin tightening skin rejuvenation led machine pdt facial light pdt light therapy machine

led skin rejuvenation is the interaction of light, delived through light emitting diodes(led),to activate cell receptors causing them to produce collagen or multiply. one of the original applications for leds was pdynamic therapy(pdt),using p-activated creams for the treatment of actinic keratosis and pre-cancerous lesions. other light-based skin therapies including intense pulsed light and laser treatments rely on thermal injury to the skin's collagen, water or blood vessels to create changes in the skin appearance..syi