WHAT IS THE DHI TECHNIQUE?
In everyday language, DHI (Direct Hair Implantation) is often described as a separate hair transplant method. In reality, DHI is an implantation technique in which the recipient site creation and graft placement are performed simultaneously using a specialized implanter pen.
Unlike FUT or FUE, DHI is not a harvesting method. It is a placement technique that allows surgeons to implant grafts with precision regarding angle, direction, and depth while aiming to reduce unnecessary manipulation.
The technique originated from the use of Choi-type implanters and gained popularity worldwide due to its ability to provide controlled graft placement and natural-looking results.
HOW IS THE DHI TECHNIQUE PERFORMED?
STEPS AND CRITICAL NUANCES
During the DHI procedure, follicular grafts are loaded into a specialized implanter pen. The surgeon then creates the recipient site and places the graft in a single motion, ensuring accurate control over placement depth and direction.
Careful planning of hairline design, density distribution, and graft orientation is essential to achieving a natural appearance. Proper graft handling throughout the procedure also plays a critical role in long-term survival rates.
High-quality evidence comparing implantation tools remains limited. However, minimizing trauma to the follicular unit and maintaining proper graft handling are universally accepted principles.
Even minor injuries to the follicular bulb may negatively affect graft survival. For this reason, experienced teams focus heavily on atraumatic handling techniques.