Infrared light therapy is delivered directly to your body during the session, and while we usually think of infrared as something we get from the sun, this is a focused, therapeutic form of light support. Infrared sits “below red” on the light spectrum—meaning you can’t see it with the naked eye—but it can penetrate much deeper into the body than many other forms of light. That depth matters, because the goal isn’t surface-level warmth, it’s reaching tissues where the body can actually respond.