Photo Dynamic (PDT) Light Therapy uses specific LED light source to regulate skin disorders such as acne, rosacea, eczema, gloomy skin color, acne scars and alopecia. The photon energy has positive effects on skin cells. It accelerates cell regrowth, improves collagen and elastin generation, promotes the micro-blood-circulation and improves the overall skin condition. LED photodynamic treatment is cancer free because it uses non-ultraviolet light and is offered in 4 different colors of light (red, blue, yellow and green):