Red light therapy refers to the practice of exposing the body to red and/or near-infrared light, with the goal of producing health benefits. There is considerable variation in how red light therapy is performed in practice, with differences in factors like the wavelengths of light used, the power intensity (irradiance) of the light, the duration and frequency of exposure, and the regions of the body irradiated.
What is red light therapy?
Written by:
Fact-checked
by:
•Last Updated: May 16, 2025
Red light therapy involves exposing the body to red and near-infrared light to achieve health benefits. The practice varies in terms of the light wavelengths, power intensity, exposure duration and frequency used and the specific body areas treated.