Each strand of hair has its own life cycle. Growth happens in four stages: anagen, catagen, telogen, and exogen. The hair ...

Most humans have an average of 2-5 million hair follicles. About 100,000 of these follicles are located on your head. In your lifetime, each follicle will go through this cycle about 10-30 times.

Your hair grows in a cycle of four stages or phases. The stages are anagen (growth stage), catagen (regression stage), telogen (resting stage), and exogen (shedding stage). Each hair follicle ...