Safe. Leson's cosmetic hair transplant is a minimally invasive operation. Hair removal and hair transplant only involve the superficial layer of epidermis and will not touch and damage the brain. Local anesthesia with standard anesthetic is safe, stable and risk-free. The hair follicles used in the operation were taken from the patient himself. Hair follicles grow naturally after operation, maintaining their original biological characteristics, and there will be no rejection. Leson cosmetic hair transplant is a safe and painless minimally invasive surgical system, and no safety accident has occurred yet.