What are the average number of hairs on a human head?
Normal human hairs can be classified according to their phases of growth. Anagen is the growing stage of hair, while telogen is the sleeping stage of hair. About 80% of the hairs on the scalp are growing and about 20% are sleeping. The scalp normally contains about 100,000 hairs. Therefore, the average number of hairs that can be lost in a day is about 100.
