<unk>  is a protein filament that grows from follicles found in the dermis.<unk>  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<unk> . Most common interest in<unk>  is focused on<unk>  growth,<unk>  types, and<unk>  care, but<unk>  is also an important biomaterial primarily composed of protein, notably alpha-keratin. Attitudes towards different forms of<unk> , such as<unk> styles and<unk>  removal, vary widely across different cultures and historical periods, but it is often used to indicate a person's personal beliefs or social position, such as their age, sex, or religion.
Hair
Feather
Wart
Caul
Biomedical tissue
Boil
Shoe
Powder