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DHI — Direct Hair Implantation uses the Choi Pen for simultaneous extraction and implantation, offering maximum density with no channel pre-opening.
Choi
Pen Tech
No
Shaving*
Max
Density
DHI is an advanced evolution of the FUE technique. The key difference lies in the implantation phase. While classic FUE requires opening channels before placement, DHI combines these steps.
Using a specialized tool called the Choi Implanter Pen, grafts are loaded and implanted directly into the scalp. This gives the surgeon full control over depth, angle, and direction, ensuring a 100% natural look.

The defining feature of DHI. Channels are not pre-opened; grafts are implanted directly using the Choi pen, minimizing trauma.
The precision of the Choi pen allows for closer spacing of follicles, enabling maximum density in specific areas.
With no pre-made incisions, scalp trauma is significantly reduced, leading to faster tissue recovery and less bleeding.
Patients often experience a quicker return to their daily routine due to the minimally invasive nature of the technique.
DHI is often the preferred method for unshaven transplants, as it allows for precise implantation between existing hairs.
Our experts can determine if you are a good candidate for the DHI technique.
DHI is highly effective for specific needs, offering solutions where other methods might fall short.
Ideal for creating precise, natural-looking hairlines.
Perfect for adding density to thinning areas without shaving.
Often preferred by women as it allows for unshaven procedures.
For those who need the absolute quickest recovery time.
Step-by-step to your new hair using the advanced Choi Pen technique.
We analyze your hair loss and design a personalized plan, determining if DHI is the best technique for your goals.
The donor area is prepared. For DHI, we often only shave the donor area, leaving the recipient area unshaven if desired.
Follicles are harvested individually from the donor area using a micromotor, just like in FUE, preserving graft integrity.
This is a unique DHI step. Assistants carefully load each extracted graft into the hollow needle of the Choi implanter pen.
The surgeon injects the grafts directly into the scalp. The pen creates the channel and places the graft simultaneously.
With no incisions to heal, recovery is rapid. We provide a comprehensive aftercare package to ensure optimal growth.
Understanding how Direct Hair Implantation differs from the standard FUE method.
Direct Hair Implantation
Advantages
Considerations
Follicular Unit Extraction
Advantages
Differences
Everything you need to know about the DHI method.
Ready for your transformation?