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Lebanon
A 17-year-old male asked:

What tans your skin the heat of the sun of the sun rays.?

2 doctor answers2 doctors weighed in
Dr. Robert Killian
General Practice 28 years experience
UV light: The rays. Not the heat.
Dr. Susan Arnoult
Family Medicine 25 years experience
The sun rays: The u.v. rays interact with melanin in the skin causing a chemical reaction to make the melanin darker. The rays also increase the number of melanin cells which then can oxidize and become darker. How cool is that???

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Last updated Sep 28, 2016

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