Red Light Therapy: Complete Beginner's Guide (2026)
New to red light therapy? This beginner’s guide covers everything you need to know — from the science behind it to how to choose your first device and use it effectively. What is Red Light Therapy? Red light therapy (RLT), also known as photobiomodulation (PBM) or low-level laser therapy (LLLT), uses specific wavelengths of light to stimulate healing at the cellular level. Unlike UV light (which can damage skin), red and near-infrared light are beneficial. They penetrate the skin and are absorbed by mitochondria — the powerhouses of your cells — boosting energy production. ...