What Is Red Light Therapy?

Red light therapy uses selected wavelengths of visible red light and often near infrared light. In research, the broader term photobiomodulation is common.

What the term covers

Photobiomodulation research includes different wavelengths, devices, doses, treatment schedules, and health outcomes. That variety is why it is more useful to ask whether a particular protocol helped a particular outcome than to ask whether every form of red light therapy works.

Common home device formats

Home products include panels, flexible pads, wearable belts, masks, and targeted devices. They can differ in coverage, distance, output, controls, and recommended session setup.