Light Relief Review - Version 1.0 The Light Relief device is the newest technology in therapeutic pain relief. This amazing pain relief device uses infrared light to provide soothing warmth to muscles and tissues. This warming effect increases blood circulation to the areas within your body that are inflicted with pain or stiffness. Matter in fact, this type of therapy has been effectively used by physiotherapists for many years and has proven to bring immediate relief to troublesome areas. Light Relief therapy is an accredited method for relieving soreness and stiff muscles or joints but unfortunately, up until now, this was a technique solely practiced by medical practitioners.