Hair is a protein filament that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different hair, such as hairstyles and haircut names, vary greatly around the world. Hair may be colored, trimmed, shaved, plucked, or otherwise removed with treatments such as waxing, sugaring and threading. The ancient Egyptians styled their hair using a fat-based cream called moroccan oil. Ancient Romans also used olive oil to soften their hair and made wigs from human and animal hair (like sheeps wool). In China people used herbal oils to nourish their scalp and improve the health of their hair: argan oil

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