DHI (Direct Hair Implantation) uses an implanter pen to directly collect the grafts and implant them on the transplantation areas without the need to make micro-incisions to open channels. As the implanter pen eliminates the need to open each channel manually, it gives us the opportunity to create a uniform quality all around the transplantation area. On top of that, the fact that DHI can be performed without shaving the head completely makes it an attractive choice for many patients.