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So that's what these things are.Finally about to order a red light mask and see what the hype is all about. Looking forward to looking like a burglar 30 minutes before bed every night. Might come in handy for Halloween too actually.
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My sister has a white one but I never asked what it was for.
This seems a good introduction:It's more that increased exposure to certain frequencies of light sounds antithetical to other areas of skin care. Why protect against 200nm light, but increase exposure to 780nm?
LED light therapy for skin is trendy—but does it work?
Dermatologists explain the science behind the wildly popular treatment, which is now available at home—for a steep price.
www.nationalgeographic.com
(BTW, nm are a unit of measurement for wavelength).
Interesting stuff!