Thanks jonnowales! The answer is perfect and now I know why the sun lightens our hair but darkens our skin :-)
Sep 15 07, 3:37 PM
CECIL SAYS: Sun darkens skin because it triggers the production of melanin, a brownish-black pigment that helps filter out harmful ultraviolet rays. It lightens hair because the UV light triggers the breakdown of these selfsame melanin molecules into simpler and evidently less colorful compounds.
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