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The UV rays of the sun reach the skin in two different forms? what are they? / (this is cosmetology)
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The UV rays of the sun reach the skin in two different forms? what are they? / (this is cosmetology)

User Dam
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Two types of UV rays reach the earth, UVA and UVB (the sun also emits UVC rays, but these are absorbed by the earth's atmosphere). UVA rays are the rays that cause tanning as well as wrinkles and other signs of premature aging, and UVB rays cause sunburns and skin cancer.
User Alex Janzik
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