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A member asked:
Is it possible to get a source of uvb rays without uvas, either by filtering or some kind of light? and can yu get too many uvbs?
A doctor has provided 1 answer
Too many UVBs: UVB rays cause skin reddening and sunburn, and damage to the skin's more superficial epidermal layers. They play a key role in the development of skin cancer (though the less dangerous forms) and a contributory role in photoaging. So it is certainly possible to get too much UVB.
Answered 7/9/2014
3.9k views
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