The term cold laser refers to the use of low-intensity or low levels of laser light. Cold laser therapy can reduce pain and inflammation and is also known to have enhancing effect on tissue and wound healing. Under the stimulation of the light, the cells are excited and start to reproduce at a faster rate. For instance, sprain, non healing bone fracture and tendonitis are all greatly helped by using cold laser therapy. The laser treatments are normally applied directly on or over the affected area.

Cold lasers are also sometimes used for acupuncture, with laser beams to stimulate the body's acupoints rather than needles. This treatment regimen appeals to those who want acupuncture but who fear the pain of needles.