A member asked:

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

2 doctors weighed in across 2 answers
Dr. Robert Killian answered

Specializes in General Practice

UV light: The rays. Not the heat.

Answered 6/13/2014

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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???

Answered 9/28/2016

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