DHI (Direct hair implantation) is a type of operation in which the quality hair follicles taken from the donor area are placed in the transplantation area with the help of special items. In this method, the hair follicles should be loosened with the help of a special device called a pencil in order to be placed in the transplantation area with the help of special pens. In this case, the hair follicles must be collected one by one with local anesthesia. The most important difference between the DHI method and other hair transplant methods is that the roots taken with surgical pens are placed in the area where the hair transplant will be done without opening any channels at once. This procedure is called a direct hair transplant because it allows the procedure to be performed at once, which normally requires two stages.