What Is Red Light Therapy? A Practical Guide
Red light therapy, also called photobiomodulation (PBM), uses specific wavelengths of red and near-infrared light. The technology is used in home devices as well as professional wellness and recovery equipment.
Rather than treating all “red light” as the same, it is useful to look at wavelength, power, treatment area, distance from the device and session duration. These parameters can vary significantly between products and research protocols.
What is red light therapy?
Photobiomodulation generally refers to the use of low-level red or near-infrared light to influence biological processes without heating tissue in the same way as an infrared sauna. Research literature commonly discusses wavelengths from the visible red range into near-infrared.
Scientists are continuing to investigate how light interacts with cells and mitochondria. Current research includes areas such as skin, pain, tissue repair and exercise recovery, but outcomes depend strongly on the condition studied and the treatment protocol.
Red light vs near-infrared light
Red wavelengths such as 630 nm, 633 nm and 660 nm are visible to the eye. Near-infrared wavelengths such as 810 nm, 830 nm, 850 nm and 940 nm are largely invisible. Many devices combine both ranges.
A combination can be useful when a device is designed for broad wellness use, because different wavelengths have different optical properties. However, more wavelengths do not automatically mean a better device. Irradiance, distance, coverage, LED quality and session protocol matter too.
What types of red light therapy devices are available?
Common formats include:
- Panels for targeted or broad-area use.
- Full-body beds for professional studios and high-capacity environments.
- Face masks for convenient facial use.
- Flexible mats for portable full-body or large-area coverage.
Browse the full Recover Body Red Light Therapy collection, or compare dedicated Red Light Therapy Panels and Red Light Therapy Beds.
How should you compare devices?
Start with the intended use. A compact panel for home use has different requirements from a full-body system designed for a wellness studio. Compare wavelength mix, treatment area, device dimensions, controls, mounting options and technical specifications.
Also check whether the manufacturer clearly states the relevant specifications. A product page that explains wavelengths, LED count, dimensions and intended operating environment is easier to compare than one built around vague claims.
What does the research say?
Photobiomodulation has been studied across many health outcomes, but the strength of evidence varies. An umbrella review of randomized clinical-trial meta-analyses reported evidence across multiple conditions while also highlighting differences in certainty and methodology. Whole-body PBM research for exercise performance and recovery remains comparatively limited, and a recent systematic review found only a small number of studies.
For that reason, red light therapy should not be presented as a cure-all. Product choice and expectations should be based on the specific use case and the quality of available evidence.
Is red light therapy the same as an infrared sauna?
No. Infrared saunas are designed primarily to heat the body. Photobiomodulation devices use selected light wavelengths and are generally designed to deliver light rather than create substantial whole-body heat.
Choosing a Recover Body device
For smaller areas, consider a compact panel or mask. For wider coverage, a larger panel or body mat may be more practical. Professional facilities that require full-body coverage and higher capacity can compare dedicated red light therapy beds.
This article is educational and is not medical advice. If you have a medical condition, are taking medication that affects light sensitivity, or have concerns about using a light-based device, speak with a qualified healthcare professional.