What wavelength is best for red light therapy

Red light therapy typically focuses on specific wavelengths within the spectrum of 620 to 780 nanometers (nm) for red light, which are part of the visible spectrum, and 790 to 1,100 nm for near-infrared light, which is not visible to the eye 1. These wavelengths are crucial for affecting cellular functions, such as enhancing mitochondrial health and improving ATP production, leading to increased energy and healing effects in the body 2.

For practical application, some specific wavelengths commonly used include 630 to 670 nm and 810 to 880 nm. These are considered effective for penetrating skin layers and influencing cellular activities like collagen production and inflammation reduction 2 3. Devices often include these wavelengths to maximize therapeutic effects, such as improved skin tone and cellular function 4 5.