Picture of Low Level Light Therapy: Sunetics Device
Low level light laser therapy (LLLT) has been used to treat a variety of medical disorders from ulcers to musculoskeletal disorders. In 2007, a low level light device was approved by the U.S. Food and Drug Administration (FDA) to treat male pattern hair loss.
There are various manufacturers of light therapy devices that are sold to physician's offices that are not handheld, such as the Sunetics device.
Text Source: Color Atlas of Cosmetic Dermatology Marc R. Avram, Sandy Tsao, Zeina Tannous, Mathew M. Avram Copyright 2011 by The McGraw-Hill Companies, Inc. All rights reserved.