You have follicles, which are little pits in your skin. Special cells int he pit release a protein called keratin, and the keratine all joins the bottom of the hair… the hair grows from the bottom. As more keratin gets added the hair gets pushed out.
There are little cells which grow really really fast in our heads. There homes are called follicles. These little bits house these cells and also release keratin. it makes your hair, as well as your nails tough.
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