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Considering trying red light therapy? Here’s what dermatologists say you should know about its potential benefits, safety, and whether it actually works. Can Red Light Therapy Actually Reduce ...
Also known as photobiomodulation, red light therapy uses continuous beams of low-energy red light between 600 and 700 nanometers in wavelength, Dr. Huh says. The light doesn’t generate heat.
The wavelength of the LED light can target different tissues. Long wavelength lights such as NIR/dark red(600-1000 nm) can have better tissue penetration and can easily absorb cytochrome c oxidase (CCO) targets by PBMT. Therefore, the long wavelength light is used for dermatology and cosmetics applications.
There is moderate evidence for the efficacy of blue and blue-red light therapies in treating mild acne, but most studies are of low quality. [5] [6] While light therapy appears to provide short-term benefit, there is a lack of long-term outcome data or data in those with severe acne. [7]
Generally, red light therapy uses wavelengths of visible red light between about 630 to 700 nanometers, which penetrate the skin where cells can absorb it, says Stevenson.
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