Understanding the Procedure
How a hair transplant is actually performed.
Quick answer: Follicular units are removed one at a time from the back and sides, sites are created in the thinning area, and the grafts are placed into them. That is the whole operation. FUE describes the extraction, DHI describes a placement tool, and Sapphire describes a blade material. None of them are different operations, and the parts that actually decide your result are the site creation and how the grafts are handled.
The marketing around hair transplants is full of technique names, and most of them describe a tool rather than a different operation. Underneath the branding, almost every modern procedure follows the same shape.
The operation, start to finish
Planning and the hairline
The surgeon examines your donor area, assesses how much usable hair you have, and draws the hairline directly onto your scalp. You should see it, discuss it, and agree it before anything else happens.
This is a judgement about your face, your age and how your loss is likely to progress. It is not a template.
This decides how natural it looksShaving and anaesthetic
The donor area is usually shaved so the follicles can be seen and extracted accurately. Local anaesthetic is injected into the donor and recipient areas. You are awake throughout, and this is the part most people find least pleasant.
Extraction
Follicular units are removed one at a time from the back and sides using a small cylindrical punch, typically well under a millimetre across. Each one leaves a tiny circular wound that heals to a dot.
Punches may be manual or motorised. What matters more than which is how carefully extraction is spread across the donor area, and how much is taken.
This decides your donor area for lifeSorting and holding
Extracted grafts are examined, sorted by how many hairs each contains, and kept in a chilled solution until they are placed. Single-hair units are typically reserved for the hairline, larger ones for density behind it.
Grafts are living tissue and they deteriorate outside the body. Time out and how they are handled affects how many survive.
This affects how many grafts surviveCreating the recipient sites
Small incisions are made in the thinning area, each one setting the angle, the direction and the depth at which a graft will sit, and the spacing between them setting the density.
Hair does not grow straight out of the head. It lies at an angle that changes across the scalp, and matching that is the difference between hair that can be styled and hair that sticks up.
This is where your result is decidedPlacement
Grafts are placed into the sites, usually with fine forceps, or with an implanter pen in the case of DHI. It is slow, repetitive work and it is commonly carried out by trained technicians.
The skill here is handling: gripping the graft without crushing it, and seating it at the right depth.
Dressing and instructions
The donor area is dressed, you are given aftercare instructions, and in most cases you return the next day for a check and the first wash to be demonstrated.
What the technique names actually mean
This is where most of the confusion is manufactured, so it is worth being plain about it.
| Name | What it actually refers to |
|---|---|
| FUE | Follicular Unit Extraction. The method of removing grafts one at a time with a punch, rather than cutting out a strip. This is the standard approach in almost all modern clinics. |
| FUT | Follicular Unit Transplantation, the older strip method. A band of scalp is removed and dissected into grafts, leaving a linear scar. Still used, mainly for very large sessions, and now uncommon for international patients. |
| DHI | Direct Hair Implantation. A placement technique using an implanter pen that creates the site and inserts the graft in one movement, rather than placing into pre-made incisions. |
| Sapphire | A blade material. Sapphire-tipped blades are used to create the recipient sites instead of steel. That is the whole difference. |
So what actually affects the result?
Four things, none of which appear in a technique name.
- The plan. Where the hairline goes, how the available grafts are distributed, and what is deliberately left untreated for later. A good plan with average execution beats the reverse.
- The site creation. Angle, direction, depth and density. This is the artistic part and the part that determines whether it looks like hair or looks like a transplant.
- Graft handling. How long grafts spend outside the body, how they are stored, and whether they are crushed by careless gripping.
- Restraint in the donor area. Taking too much, or taking it unevenly, thins the back of your head permanently. It is the one part of this that cannot be corrected.
Notice that three of those four are decisions rather than equipment. Which is why who is making them matters more than what the clinic calls its technique.
Questions worth asking about the procedure
- Who creates the recipient sites? This is the step that decides your result.
- How many grafts are you planning to take, and from how wide an area? Spreading extraction protects the donor.
- How long will the grafts be out of the body? A clinic that has thought about this will have an answer.
- How many patients are being operated on at the same time? It affects everything above.
- Will I be shaved, and how much? Practical, and people are often surprised.
A clinic that answers these plainly is telling you it has thought about them. That is most of what you are trying to find out.
What it is like on the day
Long. Most procedures run the better part of a day, with breaks. You are awake, you can talk, and after the anaesthetic goes in you should not feel pain, though you will feel pressure and movement.
The anaesthetic injections are the part people remember as uncomfortable. Extraction and placement are mostly tedious rather than painful. Take headphones and something to watch, because it is a long time to lie still.
What happens afterwards is covered separately, as is how to judge the result once it grows.
Frequently asked questions
What is the difference between FUE and DHI?
FUE describes how grafts are extracted, one at a time using a small punch. DHI describes how they are placed, using an implanter pen that creates the site and inserts the graft in one movement rather than placing into pre-made incisions. They are not competing operations. A DHI procedure still uses FUE extraction.
What is Sapphire FUE?
It refers to the material of the blade used to create the recipient sites. Sapphire-tipped blades are used instead of steel. That is the entire difference. It is not a different type of surgery and it does not change how grafts are extracted or placed.
Which part of a hair transplant matters most?
The creation of the recipient sites. Each incision sets the angle, direction and depth at which a graft will sit, and the spacing sets the density. This is what determines whether the result looks like hair or looks like a transplant.
Does a hair transplant hurt?
The local anaesthetic injections are the uncomfortable part and most people remember them as the worst of it. Once the area is numb, extraction and placement are more tedious than painful. Procedures usually take the better part of a day and you are awake throughout.
Will my head be shaved for a hair transplant?
The donor area is usually shaved so follicles can be seen and extracted accurately. Whether the recipient area is shaved varies by clinic and technique. Ask specifically, because people are often surprised on the day.
What is FUT and is it still used?
FUT, or the strip method, removes a band of scalp which is then dissected into grafts. It leaves a linear scar and has largely been replaced by FUE for international patients, though it is still used in some cases, particularly very large sessions.
Sources
Independent clinical and regulatory sources consulted in writing this page. Links open in a new tab. Last checked 6 August 2026.
- Position statement on prescribing and advertising prescription only medications used to treat male pattern hair loss. British Association of Hair Restoration Surgery. View source
- Male androgenetic alopecia. Endotext, National Center for Biotechnology Information. View source
- Hair loss, male pattern (androgenetic alopecia): patient information leaflet. British Association of Dermatologists. View source
This is general information, not medical advice. Techniques and protocols vary between clinics and only a qualified clinician can advise on your case.