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DHI · Choi Pen · Direct Hair Implantation

DHI Hair Transplant in Turkey — Choi Implanter Pen, Denser Packing at Eyeglow Istanbul

Direct Hair Implantation using the Choi implanter pen — single-step channel creation and graft implantation, allowing denser packing (60–75 grafts/cm²) and unshaven recipient option for smaller cases. Performed at our partner accredited hair clinic by a board-certified hair restoration surgeon with documented DHI volume. Written graft estimate and a year of structured photographic follow-up.

DHI hair transplant at Eyeglow, Istanbul
Procedure time7–10 hours (one session)
AnaesthesiaLocal + light sedation
ImplanterChoi pen (single-step)
Unshaven optionAvailable (smaller cases)
Time in Istanbul3–4 nights
Final result12–18 months
What it is

What is DHI hair transplant?

DHI (Direct Hair Implantation) is a variation of FUE that uses a Choi implanter pen to create the recipient channel and implant the graft in a single motion — eliminating the separate channel-creation step used in standard FUE. DHI allows denser graft packing (60–75 grafts/cm²) and supports an unshaven recipient zone for sessions under 2,500 grafts.

At Eyeglow Health in Istanbul, DHI is performed at our partner accredited hair clinic by a board-certified hair restoration surgeon with documented DHI volume of 1,000+ cases. The Turkish Ministry of Health International Health Tourism Authority Certificate is held by both Eyeglow and the partner clinic. We follow International Society of Hair Restoration Surgery (ISHRS) consensus on technique selection — DHI vs FUE is a case-by-case decision, not a marketing-driven default.

DHI is the right technique for medium-sized sessions (1,500 to 3,500 grafts) with high density target, unshaven recipient preference, or female hairline restoration. For large sessions (4,500+ grafts) standard FUE remains faster and equally effective. That decision belongs to a hair surgeon who has personally examined your scalp and Norwood pattern — not to a marketing brochure or a price-list page.

How it works

From first consultation to recovery at home

  1. 01

    Online consultation + photo assessment

    You share four standardised photographs and your hair-loss history. Our hair surgeon reviews your case, determines whether DHI is the right technique (best for smaller-to-medium sessions with high density target or unshaven recipient preference), and provides a written graft estimate before a quote is issued.

  2. 02

    Pre-operative assessment in Istanbul

    On day 1: scalp examination, donor area density measurement, recipient hairline design, blood tests (CBC, INR, hepatitis B/C, HIV per Turkish Ministry of Health protocol) and informed consent. DHI requires donor shaving; recipient area can remain unshaven for cases under 2,500 grafts.

  3. 03

    Hairline design + density target planning

    The hair surgeon walks you through the planned hairline shape, graft count by zone, and density target per cm². DHI typically allows denser packing (60–75 grafts/cm²) than standard FUE (40–55 grafts/cm²), making it suitable for crown coverage and patients prioritising thick visual density.

  4. 04

    DHI procedure (7–10 hours)

    Step 1: Donor follicular units harvested with 0.7–0.9 mm FUE micropunches. Step 2: Each graft is loaded into a Choi implanter pen — a thin needle device with a hollow tip. Step 3: The pen creates the recipient channel AND implants the graft in a single motion, with no separate channel-creation step. Performed under local anaesthetic with light intravenous sedation. The surgical team typically uses 4 to 6 Choi pens rotating to maintain implantation pace.

  5. 05

    Day 1 wash + day 3 review

    First wash with antiseptic solution at the clinic on day 1. Mild redness and forehead swelling for 3 to 7 days. Crusts shed by day 10 to 14. Shock loss (temporary shedding of grafts and surrounding hair) between weeks 2 and 8 is normal; grafts remain alive and regrow.

  6. 06

    One-year structured aftercare

    1, 3, 6 and 12-month photographic reviews. First new growth visible at month 3 to 4; 50–60 percent of final density at month 6; final result at month 12 to 18. Concurrent finasteride and minoxidil guidance provided per ISHRS recommendations to protect surrounding native hair.

Hair techniques

DHI vs FUE vs Sapphire FUE vs PRP

The right hair-restoration technique depends on case size, density target and donor reserve. Here is how the four main options differ:

AspectDHIFUESapphire FUEPRP
Channel creationChoi pen — channel + graft in one motionSeparate step with sapphire/steel bladeSapphire blade — separate stepMicroneedle — supportive only
Density target60–75 grafts/cm² (densest packing)40–55 grafts/cm²45–60 grafts/cm²Not applicable
Best case size1,500–3,500 grafts (medium)2,000–4,500+ grafts (any)2,000–4,000 graftsAdjunct, not a session
Unshaven recipientPossible for <2,500 graftsLimitedLimitedAlways unshaven
Procedure time7–10 hours6–9 hours6–9 hours60 minutes
Recovery time7–10 days crusts7–10 days crusts5–8 days (smaller crusts)Same day
Price relativePremiumStandardPremiumAdjunct
Pricing

Personalised pricing

Every treatment plan is priced individually after your consultation. Request a written, all-inclusive quote — clear, itemised, and with no obligation.

Request a written quote
Package transparency

What's included in your DHI hair transplant package

Included in package

  • Pre-op consultation + scalp examination + donor density measurement
  • Hair surgeon-led hairline design + graft count plan
  • Blood tests (CBC, INR, hepatitis B/C, HIV — Turkish Ministry of Health protocol)
  • DHI procedure with Choi implanter pen (4 to 6 pens rotating in surgical team)
  • Local anaesthetic + light intravenous sedation
  • 5-star hotel — 3 nights
  • VIP airport transfers (return)
  • All post-op medications + special shampoo + lotion + aftercare kit
  • First wash at the clinic + post-op counselling
  • 1, 3, 6 and 12-month photographic video follow-up
  • Multilingual hair coordinator — 24/7
  • Complication insurance — covers eligible post-operative medical complications during the recovery period at our partner accredited clinic (issued in line with the Turkish Ministry of Health International Health Tourism Authority Certificate)

Paid separately

Items below are not part of the medical package — your coordinator helps you arrange them at no markup.

  • Flights to/from Istanbul
  • Personal expenses
  • Finasteride (prescribed at consultation if appropriate)
  • Minoxidil 5% topical (continued at home)
  • Second-session top-up (quoted separately after 12-month review)
  • Unrelated medical treatments
  • Travel insurance (flight cancellation, baggage, general trip cover) — separate from the medical complication policy above; your coordinator can recommend a provider at no markup
Candidacy

Are you a candidate for DHI hair transplant?

You may be a good candidate if

  • You want the highest possible density in the recipient zone (DHI allows 60–75 grafts/cm² vs 40–55 for standard FUE).
  • You prefer the unshaven recipient option (possible for sessions under 2,500 grafts) so you can return to work or social life immediately.
  • You are targeting frontal hairline + mid-scalp coverage where density visibility matters most.
  • You meet standard hair-transplant candidacy: Norwood 2–5 pattern, stable hair loss for 12+ months, sufficient donor density, realistic expectations.

Standard FUE may be a smarter choice if

  • You need 4,500+ grafts in a single session — standard FUE is faster and equally effective at large case sizes.
  • You want the absolute lowest price — DHI premium is 20–30% over standard FUE due to Choi pen consumables.
  • You have advanced Norwood 6–7 pattern — donor reserve is the limiting factor, not the implantation technique.
  • Active scalp infection, scarring alopecia, or other contraindications to hair surgery (see FUE candidacy criteria).

Disclaimer. Information on this page is consistent with International Society of Hair Restoration Surgery (ISHRS) practice standards, American Hair Loss Association (AHLA) guidelines and Turkish Ministry of Health International Health Tourism Authority Certificate requirements. The choice between DHI and FUE is a case-by-case clinical decision based on case size, density target, donor reserve and surgeon experience — not a marketing-driven default.

Risks & outcomes

Realistic outcomes — the risks that actually matter

Every hair-restoration procedure has measurable risks. We list them here in the same plain language our hair surgeon uses in your consultation:

Same risk profile as FUE

DHI uses the same FUE-style follicular unit extraction; the difference is at the implantation step. Therefore the donor area risks (tiny dot scars, transient numbness, folliculitis) are identical to standard FUE. The Choi pen does NOT eliminate hair-transplant risks — it changes how grafts are implanted, not whether they survive.

Slightly higher graft trauma risk

Loading grafts into the Choi pen and the single-step channel+implant motion subject the graft to slightly more mechanical handling than the slower forceps-implantation method used in standard FUE. With experienced DHI surgeons graft survival remains 90–95%; with inexperienced operators it can be lower. We work only with hair surgeons who have a documented DHI volume of 1,000+ cases.

Density expectation vs reality

DHI can pack 60–75 grafts/cm² but this does not automatically produce 60–75 hairs/cm² visible result — single-hair grafts at the hairline plus multi-hair grafts behind give a natural look that depends on the surgeon's design, not the implantation density alone. We are honest in consultation about what DHI can and cannot do versus FUE.

Cost premium without proportional benefit

For large sessions (4,500+ grafts), the DHI premium over standard FUE may not produce a proportional aesthetic benefit. We recommend standard FUE for mega-sessions and reserve DHI for small-to-medium dense-packing or unshaven recipient cases.

FAQ

Frequently asked questions about DHI hair transplant

What is DHI hair transplant?

DHI — Direct Hair Implantation — is a variation of FUE hair transplantation that uses a Choi implanter pen (a thin needle device with a hollow tip) to create the recipient channel AND implant the graft in a single motion. The donor extraction step is identical to standard FUE (0.7–1.0 mm micropunches harvest follicular units). The difference is at the implantation step: instead of pre-creating channels with sapphire or steel blades and then placing grafts with forceps, DHI loads each graft into the pen and the surgeon performs channel-creation + implantation simultaneously. DHI allows denser packing (60–75 grafts/cm²) and supports unshaven recipient zones for smaller sessions.

DHI vs FUE — which is better?

Neither is universally better — they serve different cases. DHI advantages: denser packing (60–75 grafts/cm² vs 40–55 for FUE), unshaven recipient option for smaller sessions, single-step implantation. FUE advantages: faster for large sessions (4,500+ grafts), well-established 15+ year safety record, slightly lower cost. DHI is the right choice when density visibility is the top priority and case size is medium (1,500–3,500 grafts). FUE is the right choice for large sessions, lower cost or when an experienced FUE surgeon is available but a DHI specialist is not. We recommend the technique honestly based on your case profile.

What is the Choi implanter pen?

The Choi implanter pen — developed in Korea in 1992 by the Choi family of hair surgeons (Kyung Choi Hair Transplant Center, Seoul) — is a stainless steel pen-shaped device with a hollow needle tip in sizes 0.6 mm to 1.0 mm. The surgeon loads a single follicular unit into the back of the pen; pressing the plunger ejects the graft through the needle tip at the moment of channel insertion into the scalp. The pen allows precise control of angle, depth and direction. Modern DHI surgical teams use 4 to 6 Choi pens rotating to maintain pace; pens are sterilised between cases (single-use disposable variants exist).

How much does DHI cost?

DHI pricing is personalised — the quote depends on your graft count and whether the unshaven recipient option applies to your case. We use original Choi pen-format implanters and ISHRS-trained surgeons. Request a written, all-inclusive quote after your online consultation for an exact figure with full itemisation.

Is DHI better for crown hair loss?

DHI can be useful in the crown zone because the denser packing (60–75 grafts/cm²) helps disguise the swirl pattern that makes crown thinning visible at a distance. However, the crown is also the lowest-priority zone for most patients (front and mid-scalp are usually addressed first because they are the visible face-framing areas). Crown restoration consumes a lot of donor grafts for a moderate aesthetic gain. We discuss this honestly: if your donor reserve is limited, prioritising frontal hairline over crown is usually the right strategic choice — DHI or FUE.

Can DHI be done without shaving?

The recipient area can remain unshaven for DHI sessions under 2,500 grafts, allowing you to return to work or social activity immediately without an obvious "post-transplant haircut". The donor area must still be shaved short (the surgeon needs to see and access individual follicular units for extraction). Unshaven DHI sessions add some surgical complexity (existing hair in the recipient zone must be moved aside) and may slightly increase procedure time. For sessions over 2,500 grafts, full recipient shaving is recommended to maintain procedure efficiency and graft accuracy.

Does DHI work for women?

Yes — DHI is often the technique of choice for female pattern hair loss (FPHL) because women typically present with diffuse thinning rather than the patchy Norwood pattern, and an unshaven recipient is essential for social continuity. The most common female hair transplant target is the frontal hairline (advancing the line forward, filling in temporal recession) with 1,500 to 2,500 grafts. DHI density and unshaven recipient make it well-suited. However, female hair-loss assessment is more complex than male assessment — hormonal causes, iron deficiency, thyroid disease and telogen effluvium must be excluded first. We are honest in female consultation about whether transplant or medical therapy is the better first step.

What are the realistic risks of DHI hair transplant?

DHI shares the FUE risk profile (shock loss, folliculitis, density-below-expectation, donor dot scarring) plus a small additional risk of slightly higher graft trauma at the implantation step due to the single-step channel+graft motion. With experienced DHI surgeons (1,000+ documented cases) graft survival is 90–95%, comparable to FUE. The Choi pen does NOT eliminate any standard hair-transplant risks; marketing claims of "more natural" or "always better" DHI results are not supported by published comparative studies. ISHRS consensus: technique selection should be based on case profile and surgeon experience, not on technique branding.

Why choose Eyeglow Health for DHI hair transplant?

At Eyeglow Health your DHI procedure is performed at our partner accredited hair clinic by a board-certified hair restoration surgeon with documented DHI volume of 1,000+ cases. We hold the Turkish Ministry of Health International Health Tourism Authority Certificate and so does our partner clinic. We are honest that Eyeglow is an eye-care specialist clinic — hair transplant is delivered through our partner clinic network with full transparency. One named coordinator from first message to 12-month follow-up; written graft count estimate before any payment; honest assessment of whether DHI or standard FUE is right for your case.
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