But the effect of hair transplantation was not obvious at first. After a short period of tissue ischemia and hypoxia in vitro, the transplanted hair follicle receives the nutrient supply from the recipient and re-establishes blood circulation to survive.
Therefore, about a month after hair transplantation, the transplanted hair will slowly fall off first, which is the so-called "crazy shedding period". After the crazy shedding period, the hair follicle gradually regained its vitality and began to grow normally.