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Your fingernails are made of a substance called keratin which is an extremely hard protein. This same substance is also found in hair, skin, hooves, horns and teeth. +2
Nails are Keratin. Not sure about hair. I think it's along the lines of some sort of nutrient your body doesn't need and it comes out as hair. Or something ridiculously similar......
a protein called keratin
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Comments
So hair IS Keratin too huh??? That's what I thought but I wasn't sure so I said something stupid instead.
by King of Sexytown on October 16th, 2009
Yup
by Curious 19 on October 16th, 2009