Hair Transplants are a minimal surgical procedure that enable even extremely bald men to recover their hairline. Hair is lost due to the hormone DHT (Dihydrotestosterone, a natural byproduct of testosterone), which causes the hair follicles in the front and top of the head to shrink in size and then stop growing hair. But fortunately the hair on the sides and back of the head are immune to these effects caused by DHT. Therefore, in hair transplantation surgery a piece of this skin containing these follicles is removed from these areas. The follicles are then extracted from the surrounding tissue and reinserted into the balding areas of the scalp. Since the follicles themselves are not affected by the hormone DHT, they continue to grow hair even after they have been moved from the back of the head to the front of the head. In most cases the doctor will concentrate the placement of the hairs to the front and top of the heads at the expense of the crown because this frames the face and gives the best aesthetic result. Additional transplant procedures may or may not be performed to increase the density. While it is impossible to have the same density that existed before the hair loss, with careful placement of the follicles by the doctor, the illusion of a full head of hair can be created with a hair transplant.