A Skeptical Look at Low Level Laser Therapy | Quackwatch
Stephen Barrett, M..D.. April 26, 2018.. Low-level laser therapy (LLLT) refers to the use of a red-beam or near-infrared laser with a wave-length between 600 and 1000 nanometers and power from 5 to 500 milliwatts.. Depending on wavelength, tissues absorb energy to produce heat.. LLLT lasers transfer small or very small amounts of energy into the skin..