Question: Is there any guarantee that the transplanted follicles will grow hair?

Answer: I generally tell my patients that they can expect 90-plus % of all transplanted hair to grow, with the exception of procedures performed in an area of scar tissue (e.g. after surgery to remove skin cancer). In those cases, it is more common for about 70% of the hairs to grow, though in order to achieve maximum coverage I do compensate by using grafts that have 2 hairs instead of 1.