The stages of hair growth:
毛发生长周期
Hair grows in three stages, and each strand of hair follows its own timeline. These three stages are:
Anagen: 生长期
active growth phase of hair that lasts 2 - 6 years
Catagen: 退化期
transition phase where hair stops growing, lasts 1 - 2 weeks
Telogen: 休止期
resting phase where hair falls out, lasts 5 - 6 weeks
# The average scalp has 90 – 95% of the hair follicles in anagen phase. This means about 5-10 percent are in the telogen phase, which accounts for the 100-150 hairs that fall out every day.