
DHI hair transplant guide: Choi implanter pen technique, DHI vs FUE comparison, no-shave transplant option. From €1,720 all-inclusive at MedProper Istanbul.
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DHI (Direct Hair Implantation) is an advanced hair transplant technique that uses a specialised instrument called the Choi implanter pen to create the recipient channel and place the graft in a single motion. This eliminates the separate channel-creation step used in standard FUE, giving the surgeon more precise control over angle, depth, and direction of each individual graft.
DHI is particularly valued for hairline refinement, temple reconstruction, crown densification, and no-shave transplants — situations where precision matters more than raw graft volume. At MedProper Istanbul, DHI is performed by named, board-certified surgeons using single-use Choi pens in a JCI-accredited hospital environment.
The extraction phase is identical in both DHI and FUE — individual follicular units are harvested from the donor area using a micro-punch. The difference lies entirely in how grafts are implanted.
| Feature | DHI (Choi Implanter Pen) | FUE (Pre-Made Channels) |
|---|---|---|
| Channel creation | Choi pen creates channel and places graft simultaneously | Surgeon creates channels first, then grafts are placed with forceps |
| Angle control | Surgeon controls angle at point of implantation | Angle set when channel is created (before graft insertion) |
| No-shave option | Yes — only the donor area needs shaving |
DHI (Direct Hair Implantation) is a hair transplant technique that uses a Choi implanter pen to create the recipient channel and place the graft in one motion. It offers precise angle control and enables no-shave procedures. Graft extraction is identical to FUE.
At MedProper Istanbul, DHI costs from £2,200 / $2,800 / €2,600 all-inclusive (up to 4,000 grafts). The price includes surgeon, hotel, transfers, PRP, medication, and 12-month aftercare. In the UK, DHI costs £10,000 to £14,000. In the USA, $12,000 to $17,000.
Neither is universally better — they excel at different things. DHI offers superior precision for hairline work, enables no-shave procedures, and implants grafts between existing hairs without damage. FUE handles higher graft counts more efficiently and costs less. Graft survival rates are equivalent (90-95%). Your surgeon will recommend the best technique for your specific case.
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| Full head shaving usually required |
| Max grafts per session | Up to 4,000 | Up to 4,500 (6,000 in Mega Session) |
| Procedure time | Longer per graft (6-8 hours for 3,000 grafts) | Faster per graft (6-8 hours for 4,000+ grafts) |
| Graft survival | 90-95% | 90-95% |
| Best for | Precision work, small areas, no-shave | Higher graft counts, full coverage |
| MedProper price | from £1,470 / $1,875 / €1,720 | from £1,470 / $1,875 / €1,950 |
Bottom line: DHI and FUE produce equivalent graft survival rates and long-term results. DHI offers superior precision for targeted work and enables no-shave procedures. FUE handles higher graft counts more efficiently and costs less. Your surgeon will recommend the optimal technique based on your specific hair loss pattern, graft needs, and preferences.
The Choi implanter pen is a hollow, pen-shaped instrument with a fine needle at the tip (0.5-1.0mm diameter). The implantation process works as follows:
This one-step process means the graft spends less time outside a protected environment. In FUE, the channel is created first, and the graft is placed afterwards — introducing a brief but measurable delay between channel creation and graft placement. DHI eliminates this gap.
Multiple Choi pens are used simultaneously (typically 6-8 pens loaded in rotation) to maintain workflow efficiency. While one pen is being used by the surgeon, others are being loaded by the assisting team.
MedProper surgeons sometimes use DHI for the frontal hairline (where precision is critical) and FUE for the mid-scalp and crown (where volume is more important than individual graft placement). This hybrid approach delivers the best of both techniques. Pricing is discussed during the consultation.
One of DHI's most significant advantages is the ability to perform a no-shave (or partial-shave) hair transplant. Here is how it works:
Standard transplant: The entire head is shaved to 1-2mm. This makes extraction and implantation easier and faster, but the patient's hair loss and the procedure itself are visible for 2-3 weeks until hair grows back.
DHI no-shave transplant: Only the donor area is shaved (back and sides). The recipient area retains its existing hair at full length. The surgeon implants grafts between existing hairs using the Choi pen, which can navigate between longer hairs without damaging them.
Benefits:
Limitations:
MedProper DHI no-shave price: from £1,470 / $1,875 / €1,720 all-inclusive (same price as standard DHI).
Step 1 — Consultation and hairline design. Your surgeon assesses your hair loss, discusses your goals, and draws the proposed hairline or densification map while you sit upright. You approve the plan before the procedure begins.
Step 2 — Donor preparation. The donor area (back and sides) is trimmed to 1-2mm. For no-shave DHI, only the donor area is shaved — the rest of the head retains its existing hair.
Step 3 — Local anaesthesia. Needle-free comfort anaesthesia is applied to both donor and recipient areas. The procedure is completely painless once anaesthesia takes effect.
Step 4 — Graft extraction. Individual follicular units are extracted from the donor area using a micro-punch (identical to the FUE extraction method). Grafts are sorted and stored in chilled holding solution.
Step 5 — Choi pen implantation. The surgeon loads each Choi pen with a graft and implants it directly into the recipient area at the precise angle, depth, and direction. Multiple pens rotate in sequence (6-8 at a time) to maintain workflow efficiency. Single-hair grafts are placed at the hairline edge. Multi-hair grafts are placed behind for density.
Step 6 — Post-operative care. Aftercare instructions, medication, and follow-up scheduling. The recipient area requires gentle handling for 10 days. A protective headband is provided.
Total procedure time: 5 to 7 hours for 1,500-2,500 grafts. 7 to 9 hours for 3,000-4,000 grafts.
| Timeline | What to Expect |
|---|---|
| Day 1 | Mild redness in donor and recipient areas. Numbness fades within hours. No significant pain. |
| Days 2-3 | Post-op check at clinic. First gentle wash demonstration. Possible mild forehead swelling (resolves in 2-3 days). |
| Days 4-7 | Tiny crusts around each graft. Donor area healing rapidly. For no-shave patients, existing hair conceals most visible evidence. |
| Days 7-10 | Crusts shed during daily washing. Donor area fully healed. Recipient area slightly pink. Safe to return to work. |
| Weeks 2-4 | Transplanted hairs shed ("shock loss" — completely normal). Follicles remain alive beneath the surface. |
| Month 3 | New hair growth begins. Initially fine and wispy. |
| Months 6-8 | 50-70% of grafts visible. Noticeable density improvement. |
| Month 12 | Full result. Hair can be cut, styled, and treated normally. |
| MedProper Istanbul | UK Private Clinic | USA Private Clinic | |
|---|---|---|---|
| DHI (up to 4,000 grafts) | from £1,470 / $1,875 | £10,000 - £14,000 | $12,000 - $17,000 |
| Included services | All-inclusive (surgeon, hotel, transfers, PRP, aftercare) | Procedure only | Procedure only |
| PRP | Included | £400-£800 extra | $500-$1,000 extra |
| Hotel | 3 nights included | Not included | Not included |
| Follow-up | 12 months included | Per-visit charge | Per-visit charge |
| You Save | — | up to 80% | up to 84% |
Yes. DHI is the only technique that reliably enables no-shave transplants. Only the donor area (back and sides) is trimmed. The recipient area retains its existing hair at full length, concealing the procedure. The no-shave DHI price at MedProper is the same as standard DHI: from £2,200 / $2,800.
DHI can transplant up to 4,000 grafts in a single session at MedProper. For patients needing more than 4,000 grafts, FUE or a Mega Session (up to 6,000 grafts) is recommended. Alternatively, a hybrid approach (DHI for the hairline, FUE for the crown) can combine precision with volume.
No. Both techniques use the same local anaesthesia protocol. The extraction phase is identical. The implantation phase with the Choi pen feels the same as forceps placement. Post-operative discomfort is equivalent.
5 to 7 hours for 1,500-2,500 grafts. 7 to 9 hours for 3,000-4,000 grafts. DHI is slightly slower per graft than FUE due to the one-at-a-time loading of the Choi pen, but this additional time buys greater precision.
The timeline is identical to FUE: shock loss at weeks 2-4, new growth from month 3, noticeable density at months 6-8, full result at 12 months.