Hair Growth

Every 24-72 hours, cell division and corresponding hair growth occurs within the hair follicles resting deep inside the dermis. Despite the speed of this process, it takes newly formed hair about three weeks to appear at the skin surface. Hair grows on a cyclical basis with each hair growing to a pre-determined length. Eyebrow, eyelash and beard hairs never grow as long as scalp hairs because they spend less time in the growing phase before entering a resting phase.