Human hair refers to the filamentous growth that naturally grows on the human scalp, commonly known as hair. It is made up of protein structures called keratin, which also form the composition of nails and skin. Human hair varies in different individuals, exhibiting a range of colors, textures, and patterns, classified into categories such as straight, wavy, curly, or coiled. The average human head contains around 100,000 to 150,000 individual hair strands.
Functionally, human hair serves several purposes. Its primary role is to provide protection for the scalp against environmental elements such as sunlight, heat, and cold. Additionally, hair aids in regulating body temperature as it acts as an insulator. It also serves as a sensory organ, helping individuals to detect subtle changes in their surroundings, especially with regards to air movement or insects approaching the skin.
Hair growth is a cyclical process that follows different stages, including the anagen (growth), catagen (transition), and telogen (resting) phases. On average, hair grows at a rate of about half an inch per month. Human hair is known for its ability to retain its shape when styled using various products and tools. Haircare practices involve washing, conditioning, and trimming for maintenance and hygiene purposes.
Over the years, human hair has had various cultural, social, and aesthetic significances. It is commonly styled and manipulated in different ways to reflect individual personality or cultural identity. Furthermore, human hair has been utilized in various industries, such as wig-making, hair extensions, and scientific research.
