Most patients who come to us for a consultation have already researched FUE and DHI online. They arrive knowing these are the two main modern techniques and wanting to understand which one applies to them. The answer is usually that FUE is the extraction method used in both, and that the difference lies in the implantation phase — but the distinction matters clinically, and it is worth explaining properly.
What FUE Actually Means
Follicular unit extraction is an extraction method, not a complete surgical technique. It refers to the way individual follicular units are removed from the donor area: a circular punch tool — typically 0.7 to 0.9mm in diameter — is used to isolate each follicle, which is then removed and stored in a preservation solution until it is ready to be implanted.
The alternative extraction method, FUT, involves removing a strip of scalp from the donor area and dissecting individual follicular units from it in the lab. FUE is preferable for most patients because it leaves only small, scattered dot scars rather than a linear scar.
Standard FUE Implantation
In standard FUE, after extraction is complete, the surgeon creates a series of recipient channels in the scalp using fine blades or needles. These channels are pre-made — the surgeon determines the angle, depth, and direction at the point of channel creation. The follicles are then placed into the channels one by one using forceps.
The graft placement phase requires careful handling to avoid trauma to the follicles. The longer grafts are out of the body during the placement process, the greater the risk of reduced survival, so efficiency during this phase matters.
DHI: One Step Instead of Two
The DHI technique uses a Choi implanter pen to combine the channel creation and graft placement into a single step. The follicle is loaded into the hollow needle of the pen, which is then pressed into the scalp to simultaneously create the channel and deposit the graft. The surgeon has direct control over the angle and depth at the moment of implantation.
The practical advantages of DHI become most apparent in specific situations. When working around existing hair — placing grafts between hairs that are still growing — the pen allows much more precise targeting with less disturbance to surrounding follicles. For small, detail-oriented areas such as the hairline edge, eyebrows, and beard, DHI is our preferred approach precisely because of this control.
Which Is Right for You?
For large-scale scalp restoration covering significant areas of baldness, standard FUE with pre-made channels is efficient and effective. The pre-made channel approach allows a high volume of grafts to be placed systematically across a large surface area.
For patients with partial thinning where existing hair needs to be preserved, or for anyone having beard or eyebrow transplant work, DHI is usually the better choice.
Many patients receive a combination within a single procedure: standard implantation in the denser recipient zones and DHI at the hairline edge or other precision areas.
At Hair Transplant Belfast, the technique is determined at your consultation based on your specific hair loss pattern, the areas being treated, and the density required. If you have questions about which approach is appropriate for you, book a consultation and we will explain the recommendation in detail.
