LASER stands for Light Amplified by Stimulated Emission of Radiation. Low level laser are "cold" lasers, which simply means they do not produce heat. Cold laser are either red light lasers or infrared lasers. Red light lasers penetrate relatively superficially. Infrared lasers penetrate deeper. Both types of laser are painless and very safe. Lasers can decrease pain and inflammation, increase circulation and increase cellular energy. Low Level Laser Light has unique physical properties that no ordinary light has. This is the key to why laser light is so effective compared to other kinds of light in healing. There are more than 100 double-blind positive studies confirming the clinical effect of LLLT (Low Level Laser Therapy). More than 2500 research reports are published. You can find a multitude of research articles on lasers at www.laser.nu