Hair growth, the process of new hair emerging from the scalp, is a common phenomenon experienced by humans. As hair follicles receive nourishment from the body, they produce new hair strands that gradually push old strands outward.
Hair growth plays a significant role in personal appearance and can impact self-esteem. It also serves practical purposes, such as protection from sun exposure and regulation of body temperature. Historically, hair growth has been associated with cultural and societal norms, with different hairstyles and treatments reflecting personal style and social status.