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Why does light make our skin darker but our hair lighter?

~Lexi ;)

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http://health.howstuffworks.com/skin-care/beauty/sun-care/sunscreen4.htm
When you get a tan, what is actually happening is that the melanocytes in your skin are producing melanin pigment in reaction to ultraviolet light in sunlight. Ultraviolet light stimulates melanin production. The pigment has the effect of absorbing the UV radiation in sunlight, so it protects the cells from UV damage. Melanin production takes a fair amount of time.

Ultraviolet light damages skin .. This is how your built-in protection mechanism protects your skin from sun burn. The darker colour (enhanced pigment) caused from tanning is actually evidence of damage to the skin.

The hair does not have this protective mechanism .. the sun simply bleaches and fade the colour .. much like you see on a painted surface that has been sitting in the sun for a long period of time. It fades.

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Incredubella
I always say if two sources have the same answer, truth can be found. Good work Biker
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I don't know but I like it. :D

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haha
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hhhmmm really a amazing question to ask but i can't answer!

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Incredubella

Our skin is alive, and it tans. Our hair is dead, and it burns, in a nutshell.

Found this link with a reasonable explanation. Kinda the same as Bikergirl's answer. http://genetics.thetech.org/ask/ask180

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hi

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Oils have nothing to do with the effects of the sun.
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I only think I know about the hair lighter because it's shiny and the light reflects off your hair? I'm not sure if that makes any sense though...

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