When performing DHI which is short for Direct Hair Implant we use a special pen called the choi pen.
In FUE we use micro motors to harvest the hair, in DHI we harvest the hair follicles with the choi pen.
Using this pen, we harvest the hair in the donor area, and transplant them immediately to the recipient area – this takes only seconds. This process involves harvesting the hair follicles one by one, and transplanting them.
The con of DHI method is that the whole process longer – in FUE the surgery takes 6-8 hours whereas in DHI it can take 2-3 days.