Hair loss and Treatments-Updates and Perspectives
Hair loss and Treatments-Updates and Perspectives On average, a healthy man or women’s scalp has 80000 to 120000 essential terminal hairs. Keratin is a protein that is formed in the hair follicles and is used to make hair. Hair follicles go through a series of development and rest cycles. The growth rate of hair is roughly 0.3 mm per day during growth phase, which lasts 2-6 years . The maximum length of hair that can be achieved is determined by the length of anagen phase. After a brief intermediary phase, the hair enters a rest phase that lasts 2 to 4 months before falling out . T he approximately 100000 hairs on a person’s head develop autonomously in normal circumstances. Hair growth is cyclic, compraising anagen (enlargement), catagen (involution), and rest periods (telogen). Complex communications between the epithelium and the dermis regulate active growth and rest cycle, which are still poorly implicit . In a healthy scalp, the majority of follic