When it comes to the survival rate of hair transplants, it is important to understand how the hair is made to survive after being transplanted. The hair follicle contains many continuously proliferating cells with a very active metabolism that requires a large amount of nutrients to meet the needs of continuous hair growth. These nutrients are delivered to the hair follicle cells through the blood circulation. Therefore, hair follicles are very sensitive to ischemia. Hair follicle ischemia can lead to hair loss or even follicular necrosis. The transplanted hair follicles must be implanted in the balding area in the shortest possible time and draw nutrients from the balding area in order to become viable. Protecting the follicles during surgery is a key measure to ensure the survival rate of the transplant. Protection of the hair follicle includes the following: 1. No mechanical damage to the hair follicle. In the process of cutting the scalp from the occipital donor area, cutting and implanting hair follicles in the hair transplant unit, any careless operation may cause mechanical damage to the hair follicles. Therefore, fine, accurate, fast, patient and skilled operation can maximize the protection of hair follicles from damage. 2.Prevent ischemic injury. After the scalp of the donor area is cut down, the hair follicles are temporarily interrupted the blood circulation, if more than a certain time (8 hours), some of the hair follicles will be necrosis because of ischemia. Keeping the hair follicle graft in a cold environment (1-4°C) during the operation can enhance the ability of the hair follicle to tolerate ischemia. Multiple people (3-4 people) operating skillfully at the same time can greatly speed up the procedure, which can shorten the ischemic time of hair follicles and increase the survival rate. 3. Before transplanting hair follicles, holes need to be punched in the transplantation area, this operation will destroy the local blood circulation, if the holes are too dense, the local blood circulation will be severely damaged and the hair follicles will not be easy to survive. Therefore, attention to control the transplant density is also the key to ensure the survival rate. The application of hair transplantation needles can reduce the damage to the blood circulation in the bald area, but hair transplantation needles are only used for transplanting follicular units containing 1-2 hairs, which is a more complicated operation with higher technical requirements. As hair transplant professionals, we always keep in mind that hair follicles are not renewable and must treat each hair follicle of patients seriously and never waste their precious hair follicle resources. Patients cherish every hair they have, and we must cherish every hair follicle of our patients. Maintaining a high degree of responsibility during surgery is the most critical factor in ensuring the survival of transplanted hair follicles.