is the type of protein that makes up your hair, skin, and nails. Keratin
can also be found in your internal organs and glands. Keratin is a
protective protein, less prone to scratching or tearing than other types
of cells your body produces.
Keratin can be derived from the feathers, horns, and wool of different
animals and used as an ingredient in hair cosmetics. Since keratin is
the structural building block of your hair, some people believe that
keratin supplements, products, and treatments can help strengthen your
hair and make it look healthier.
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