It is called hair yet very thin filament that arises from the skin of human beings and of various animals, especially in species that belong to the group of mammals. In the case of people, hair is used as a synonym for hair .
The hairs are born in the Hair follicles where is your root . They consist of a fiber of keratin and grow up, so that the stem protrudes from the surface of the epidermis .
It is important to mention that hair is present on most of the surface of the body . It is estimated that an adult has about five million hairs , of which one million of them are in the head area.
Among the functions that fulfill the hairs, the body heat conservation . Those located in the scalp also provide impact protection , while those that form the eyebrows They prevent the sweat of the forehead from entering the eyes. The hairs of the tabs while they take care of eyes of dust and excess light.
The hair has different characteristics according to each individual. According to melanin , can be blond , Brown , black , Red , Gray or White , for example. As for its structure, on the other hand, it can be curly , wavy or straight . In addition the hairs differ according to whether fatty , dry , mixed or normal .
Beyond its anatomical importance, hair has a role aesthetic . To take care of it and beautify it, mens and women usually go to establishments known as hairdressers , where experts take care of washing, cutting, combing and dyeing it.