Quackwatch Home Page Chapter 20.
Treatment is applied by placing a hand-held treatment unit on the patient's skin.
Usually 4 to 6 treatments lasting 15 to 20 minutes are required. The light coagulates the small blood vessels, which are sealed off and gradually fade away. There may be slight reddening or local swelling for a few days. Other temporary side effects, which are rare, include blistering, burning, or changes in skin color.