Learning center
What to know before choosing a red light device
Start with the format, exact wavelengths, coverage, controls, care requirements, evidence boundary, warranty, and support. A larger number on a product page is not automatically a better routine.
Red light products use visible red and sometimes near-infrared wavelengths. Research into photobiomodulation covers many devices and dosing methods, so general studies should not be presented as proof for a specific consumer product.
| Question | What to check |
|---|---|
| Format | Mat, panel, belt, pad, mask, or handheld device |
| Wavelengths | Exact numbers, not only “red and infrared” |
| Coverage | Dimensions and photos showing real scale |
| Controls | Timer, brightness, modes, auto-off, and clear instructions |
| Proof | Manual, testing method, warranty, support, and honest limitations |
660 nm and 850 nm
Two wavelengths, different visibility
660 nm is visible red light. 850 nm is near-infrared and is much less visible to the eye. The Repretty mat lists both wavelengths. Wavelength presence does not by itself establish the right dose or outcome for every person or goal.
Mat
Broad supported coverage and a lie-down routine.
Panel
Upright use with more attention to distance and exposure area.
Belt or pad
Smaller targeted use with easier portability.
Evidence discipline
A trustworthy product page tells you which facts belong to the device and which claims come from broader research.
External sources provide general education and do not evaluate this Repretty device.