The hair (from the Latin capillus ) is becoming one of the growing on the scalp (top of the head of the human body).
There are on average 150,000 hair strands in an adult and grow on average 1 cm per month. It is apart from the common for its high concentration of skin area and the developing length. They can be straight, curly, wavy and many colors . The hair not only serve as an aesthetically (forming and valuing the face) but also act as a thermal insulator, protecting the head of the solar radiation and mechanical abrasion. It may also be indicative of various diseases manifested by changing its structure.