Dermatology: Why does sun exposure darken skin, but peroxide coat?

Or is this just an illusion?
Answers:
Sun darkens skin because it triggers the production of melanin, a brownish-black pigment that help filter out harmful ultraviolet rays. It lightens hair because the UV light triggers the breakdown of these selfsame melanin molecules into simpler and evidently smaller amount colorful compounds. Source(s): http://www.straightdope.com/columns/read…
the sun turns hair lighter because when it hits the melanin it turns it into the lighter pigment color. skin is different because there is not as much melanin in your skin, so the vitamin c help your skin and produces more melanin.

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