Keratin Keratin Keratin () is one of a family of fibrous structural proteins. It is the key structural material making up hair, horns, claws, hooves, and the outer layer of human skin. Keratin is also the protein that protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and form strong unmineralized epidermal appendages found in reptiles, birds, amphibians, and mammals. The only other biological matter known to approximate the toughness of keratinized tissue is chitin. Keratin derives from Greek ' from '
History of removal of leg and underarm hair in the United States 2008. A woman who does not remove body hair is perceived as being less sexually attractive, sociable and intelligent than the same woman without body hair; and incites disgust. History of removal of leg and underarm hair in the United States At the outset of the United States, leg and underarm hair removal was not a common practice for women. In fact, body hair had been viewed as a boon by Caucasian people, and therefore removal was not an imported practice from European settlers into the United States. American women's new practice of armpit and leg hair removal began in