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Showing posts with label melanin. Show all posts
Showing posts with label melanin. Show all posts

Monday, December 7, 2009

If your hair is red why does it go white? Does it change structure?


If your hair is red why does it go white? Does it change structure?

The process is very likely to be the same as any other hair colour. All you’re doing is losing from the hair the ability to add some colour. The colour is accounted for by different forms of melanin: the same hormone, the same chemical in the skin that makes you go brown. You just lose the ability to add that to the hair so you see the natural colour of the hair: the keratin and that’s the stuff which is white.


Wednesday, November 11, 2009

what is the difference between a freckle and a mole ?


what is the difference between a freckle and a mole ?

A freckle is a collection of the skin pigment melanin in the skin, but in a concentration. Some people who are very freckly, have very pale skin in-between their freckles, so they have little patches of skin which makes the pigment not many cells which make the pigment outside that patch. A mole is the cells in the skin which make the pigment but more them in a lumpy patch.