DHI Hair Transplant
Direct implantation with the Choi pen for density and precision.
A DHI hair transplant places grafts with a Choi implanter pen in one step, cutting ischemia time from minutes to seconds.
DHI (Direct Hair Implantation) places follicles directly with a Choi implanter pen — no separate channels.
Best for
DHI suits dense hairlines and the unshaven option. See FUE vs DHI and the full guide.
The real difference: the Choi implanter
In DHI the grafts are not placed into pre-made channels but inserted with a Choi implanter pen in one step: channel creation and placement happen together. The practical gain is that ischemia time drops from minutes to seconds per graft. Published survival rates are around 90–97%, slightly above standard FUE.
Where DHI is genuinely strong
Hairline: the pen allows very shallow angles and high precision – exactly where naturalness is decided.
Density between existing hair: without pre-made channels there is less risk of injuring native follicles.
Unshaven procedures: more feasible. Downsides: slower, more staff-intensive, more expensive, and less suitable for very large areas (5,000+ grafts).
DHI vs FUE, plainly
| FUE | DHI | |
|---|---|---|
| Survival rate | ~90–95% | ~90–97% |
| Ischemia time | Minutes | Seconds |
| Large areas | Well suited | Less suited |
| Cost | Lower | Higher |
The gap between 93% and 95% is real, but smaller than the gap between an experienced and an inexperienced team. The method is not the surgeon.
The donor area is a lifetime budget
The single most important fact: donor hair does not grow back. On average a person has 4,000–8,000 usable grafts over a lifetime, and only about 40–50% of donor capacity can be safely harvested while keeping the area looking natural and preserving reserves for later sessions.
A clinic that harvests to the maximum today is selling you your own future.
The right question to ask
Not “do you do DHI?” but: who places the grafts – the doctor or a technician? How many grafts per patient per day? What is your transection rate? How long are grafts outside the body? See how safe is a hair transplant and FUE.
This page is for general information and does not replace medical advice. Results are individual and cannot be guaranteed.
DHI hair transplant: key points
Published survival rates are about 90–97%, slightly above FUE. It excels at the hairline and densification but is less suited to very large areas.
Team experience outweighs the method – the donor area remains finite at 4,000–8,000 grafts.
For the full overview, see our main page on hair transplants in Istanbul.
Frequently Asked Questions
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