FUE vs DHI: how the two techniques really differ

FUE and DHI take grafts out in exactly the same way, one at a time with a tiny round punch. The difference is how the grafts go back in. FUE places them into small channels opened first, while DHI places each graft with a pen-like tool in one move. At Dr. Grafts, sapphire FUE is the main technique for bald areas, DHI is for adding grafts where you still have hair, and for the hairline our surgeons choose between the two case by case. Our hair transplant page explains the whole procedure.

What FUE and DHI have in common

A graft is a tiny piece of skin that holds 1⁠–⁠4 hairs, about 2.2 on average. Both techniques take grafts from your donor area: the back and sides of the head, where hair resists pattern hair loss. So at the extraction stage, every DHI procedure is also an FUE procedure.

Both techniques also share:

• local anaesthetic, so you stay awake, and most people feel pressure, not pain, after the first injections
• tiny dot scars in the donor area, which are usually hard to see once the hair grows back
• the same growth timeline: shedding in the first weeks, new hair from month 3⁠–⁠4 and most of the result at 12 months

So the useful question is not how grafts come out. It is how they go in, and who puts them there.

How FUE implantation works

With FUE, small channels are opened first: tiny cuts in the skin of the area being treated. Each channel sets the angle, direction and depth of one future hair. Channels can be opened with fine steel blades or with sapphire blades, which stay very sharp. The second option is called sapphire FUE, and it is the one we use.

Once the channels are ready, the grafts are placed into them with fine forceps.

Where FUE works well

• Areas that are bald or nearly bald, at the front, top or crown
• Some hairlines, where fine sapphire channels can sit very close together
• Plans with many grafts, because placing grafts into ready-made channels is quick
• Planning density and direction across the whole area before any graft goes in

Its limits

• Each graft is picked up with forceps, so gentle handling is essential
• The area being treated usually needs a full shave; unshaven sapphire FUE is rare
• Among a lot of existing hair, DHI is usually the more precise choice

You can read more on our FUE hair transplant page.

How DHI implantation works

DHI stands for direct hair implantation. Each graft is loaded into an implanter: a hollow needle inside a pen-like tool. The original version, the Choi implanter, was developed in South Korea in the early 1990s.

The needle opens the skin, and the graft slides in as the needle comes out. Angle, direction and depth are set for each graft as it goes in.

Where DHI works well

• Diffuse or sparse thinning, placing grafts between existing hairs
• The crown and the mid-scalp or front, when there is still hair there
• Partly shaven procedures; unshaven ones are possible but usually not advised
• Women, and second procedures when your own hair around an earlier transplant has fallen out

Its limits

• It is slower per graft than placing grafts into ready-made channels
• It needs a well-trained team and many implanters working in rhythm
• At the hairline it is often used, but for some hairlines our surgeons prefer the closer packing of sapphire channels

Implanters can also be used in channels that were opened first. Clinics use these names in different ways, so ask what will actually happen in each area. You can read more on our DHI hair transplant page.

How our surgeons choose

Our surgeons choose by how much hair you still have in each area.

• Little or no hair left: sapphire FUE. The channels are opened first, so a bald area is covered evenly and quickly.
• Sparse or thinning hair: DHI. Each graft goes in precisely between the hairs you already have.
• The hairline: DHI or sapphire FUE, decided case by case from your photos and on the day. Either way, the first 2⁠–⁠3 rows get single-hair grafts, and behind them go grafts with 2, 3 or 4 hairs, depending on what your donor area gives.

Our surgeons sum it up like this: “DHI is like a sniper rifle, and sapphire FUE is like a machine gun.” DHI is for precise placement between existing hairs. Sapphire FUE covers open ground quickly and densely.

FUE vs DHI at a glance

Does one technique grow more hair?

Not on its own. Studies that compare the two directly are few and small. What matters most is how gently each graft is handled, how long it spends outside the body and how skilled the team is.

That is why “FUE or DHI?” is a less useful question than “who does each step?”. Ask any clinic who will actually do each step of your procedure, and how many patients that surgeon treats on the same day.

At Dr. Grafts, your surgeon leads your whole procedure: they design your hairline with you, plan your grafts, take out grafts themselves, open the channels themselves (sapphire FUE) or place the grafts with the DHI pen themselves (DHI), and check every stage of the day, with an experienced technician team working under their direction. We are a boutique clinic with two surgeons, and we usually treat two to three patients a day.

When a hybrid plan makes sense

A hybrid means sapphire FUE and DHI in the same procedure: for example, sapphire FUE where the scalp is bald, and DHI where hair is thinning but still there. It is not our standard plan. Your surgeon decides case by case whether it helps you; it is not something you choose from a menu.

A hybrid can make sense when:

• part of the area is bald and part still has hair, such as a bald front with a thinning crown
• you need a new hairline and also want density added among existing hair further back

When the whole area is bald, sapphire FUE alone is usually enough. When the whole area is thinning but not bald, DHI alone often is.

Our packages do not depend on the technique. Every package includes the same surgery, and sapphire FUE, DHI and hybrid plans all cost the same; you can compare the packages on our prices page. To see how the size of a plan is worked out, read how many grafts do I need?

Shaving, days, recovery and cost

Shaving. For sapphire FUE the head is usually shaved, so the whole area can be seen and reached. An unshaven procedure is possible, usually with DHI, but it costs more, and our surgeons usually advise against it, especially for diffuse thinning. Your surgeon makes the final call during your assessment.

Days. Whatever the technique, a session is done in one day, and we never take more than 5,000 grafts in one session. Two days are needed only when chest hair grafts are used, because they are taken under sedation, or for some large unshaven cases.

Recovery. Recovery is much the same with both techniques. Expect some swelling for a few days, crusts that come away with gentle washing by day 10⁠–⁠14, and redness that fades over about the same time. Our guide to recovery week by week has the details.

Cost. With us, sapphire FUE and DHI cost the same, so your surgeon can choose on medical grounds alone. Wherever you compare, ask whether the technique changes the price.

Questions to ask before you choose

1. Which technique will you use in each area, and why?
2. Who takes out the grafts, and who opens the channels or holds the implanter?
3. How many grafts will go into each area, and at what density?
4. How many patients will my surgeon operate on that day?
5. Will I need a full shave?

Clear, specific answers tell you more than the name of the technique.

Next step

If you are not sure which technique suits you, send us four photos for your free plan. Your surgeon suggests a technique for each area, with a graft estimate and a full price, usually within 24 hours.

Sources

• Surgical Treatments – International Society of Hair Restoration Surgery (ISHRS)
• Advancements in Graft Placement Techniques – Speranzini M, Souza SEG. Facial Plastic Surgery, 2024 (PubMed)
• Use of Implanters in Premade Recipient Sites for Hair Transplantation – Bansal A, et al. Journal of Cutaneous and Aesthetic Surgery, 2019 (PubMed)
• Hair transplant – NHS