The Biological Reasons Of Having Straight Or Curly Hair
People wonder why some people have straight, easy to brush hair, while others have hair that is so curly that is difficult to brush. Straight hair and curly hair depends on how the amino acids are distributed on the sides of the hair strands. Also, the difference between thick and thin hair lies in the follicles, as well as if it bends to one side or another. Click here for more info.
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