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How Heat Damages Human Hair

Many women and some men are very particular about their hair. One of the ways for keeping it in shape involves applying heat, but just how much of it and for how long has been mostly left to experience. A scientist from Purdue University, Indiana, is trying to find a scientific answer. Some people who have naturally curly hair prefer to have it straightened. Others with straight hair want to have curls. “It is kind of like the way I see the world, like the lens through which I see...

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