Protein called keratin aids in the preservation of structure. a particular class of protein that can be discovered on the epithelial cells that line the body's interior and exterior surfaces. Keratin assists in forming the tissues of the nails and hair. Keratin is a protein that is similar to collagen and elastin. It has a significant structural role in the development of your skin, nails, and hair.
https://kiri10.com/blogs/news/what-is-keratin-what-is-keratin-made-of
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