Hair Transplant: What It Is, Techniques, Candidacy, Timeline, Risks and Cost

A hair transplant is the surgical redistribution of hair follicles from a genetically resistant donor area, the back and sides of the scalp, into areas of loss. It treats the pattern of loss, not the cause: the untransplanted, susceptible hair keeps thinning, which is the single most important thing to understand before you start¹².

I am Felix. I had an FUE transplant, and I spent months before it reading marketing dressed up as fact, so I have written the plain version I wanted then. This is the hub. If you already know the basics and want the two techniques compared, go to FUE versus FUT; if you are not sure it is even for you, start with am I a candidate for a hair transplant.

What is a hair transplant?

A hair transplant moves follicular units, the natural clusters of 1 to 4 hairs, from a DHT-resistant donor zone into thinning areas, where they keep the behaviour of their donor site. This is the donor dominance principle: hair taken from the back and sides resists dihydrotestosterone (DHT), the main hormonal driver of male pattern loss, so it survives where it is planted¹².

Male pattern loss affects roughly half of men by age 50 and up to 80% by age 80, so this is common ground, not a rare problem². The thing that took me longest to accept is that a transplant is permanent for the moved hair but does nothing to stop the native hair around it thinning. It relocates a finite supply; it does not create new hair. For how surgeons count that supply, see grafts and density.

FUE versus FUT: the two techniques

The two core methods differ in how the donor hair is harvested: FUE removes follicular units one by one with a 0.7 to 1.2 mm punch leaving tiny dot scars, while FUT removes a strip of donor scalp closed with stitches, leaving a single linear scar. FUE suits short styles and recovers faster; FUT harvests large numbers quickly and hides its scar unless the hair is very short²³.

The honest headline is that the ISHRS notes FUE is not scarless, and that graft survival depends on handling and timing rather than the tool. That is why branded variants (DHI with an implanter pen, sapphire-blade FUE, robotic ARTAS FUE) perform about the same as standard FUE; they are placement or automation methods, not different operations. The full comparison is in FUE versus FUT, with the detail in what is FUE, what is FUT, DHI and sapphire and robotic FUE.

Am I a candidate?

Good candidates have stable, patterned loss and enough donor hair; surgery is typically for Norwood III to V in men and Ludwig II to III in women, with earlier stages usually managed with medicine first. The limiting factor is always donor supply: safe-zone density is about 65 to 85 follicular units per cm2, and the lifetime harvestable donor supply is commonly cited at about 6,000 to 8,000 grafts, a hard ceiling that makes full coverage of very advanced loss unachievable¹.

Poor candidates include those with diffuse unpatterned loss involving the donor zone, unstable or rapidly progressing loss, scarring alopecia, and unrealistic expectations. Caution applies under about age 25 with fast-progressing loss. See am I a candidate, the Norwood scale, and hair transplants for women.

Grafts and density

A graft is roughly one follicular unit (about 2 hairs on average), and transplants reach about 30 follicular units per cm2 (a range of about 25 to 45), which is roughly a third to a half of native density. Native non-balding density is about 80 to 100 follicular units per cm2, so coverage relies on angling and the illusion of density rather than matching what you started with¹.

First-time procedures average about 2,000 to 2,400 grafts, and only a small minority exceed 4,000 in one session. Because the donor is finite, the count is a budget to be spent carefully, not a number to maximise. Work through it in grafts and density, how many grafts do I need and the donor area and overharvesting.

The day of the procedure

A hair transplant is a local-anaesthetic day case lasting about 4 to 8 hours: you are awake and pain-free throughout and go home the same day. The duration scales with the graft count, and FUE usually takes longer than FUT; very large cases can run into a second day. The hairline is created at a natural 15 to 20 degree angle, and grafts are placed by the surgical team³⁴.

Sitting there awake for the better part of a day, chatting to the technicians while my scalp was numb, was stranger and more ordinary than I had imagined. Graft survival falls the longer follicles are out of the body, which is one honest reason sessions are limited in size. The full account is in the hair transplant procedure, hairline design and my own day of my hair transplant.

The timeline and results

Expect the result in months, not weeks: transplanted hairs shed at about 2 to 8 weeks, new growth begins at about 3 to 4 months, and the near-final result arrives at about 6 to 18 months. The shedding phase, sometimes called shock loss, is normal and expected, though nothing prepared me for watching the new hairs fall out weeks after paying for them⁴³.

Graft survival is commonly about 85 to 95%, though it is skill-dependent and the literature ranges more widely; the “95 to 98%” figures you see advertised are marketing, not controlled data². The long wait is the hardest part to sit with, and I have laid it out in the hair transplant timeline, the shedding phase, waiting for it to grow and results.

Risks and side effects

Serious complications are uncommon: infection is rare, under about 1%, thanks to the scalp’s rich blood supply, and idiopathic poor growth (“Factor X”) runs at around 0.5 to 1%. Temporary scalp tightness, swelling and scabbing are common and settle; persistent numbness affects around 2%⁵³.

The NHS lists bleeding, infection, an anaesthetic reaction, graft failure, noticeable scarring, and continued thinning of the surrounding hair as the risks to weigh. Overharvesting the donor or exceeding safe density risks visible thinning and an unnatural look, which is the failure mode I would most want to avoid. See risks and side effects and hair transplant scars.

Do I need medication afterwards?

Often yes: because a transplant does not stop native loss, medicine like finasteride or minoxidil is advised to protect the surrounding hair and avoid a patchy result later. Finasteride lowers DHT by about 70%, and over 5 years about 90% of men kept regrowth or had no further visible loss; it is FDA-approved at 1 mg/day for men, not approved in women, and contraindicated in pregnancy⁶.

Minoxidil is the only topical FDA-approved for pattern loss in both men and women and needs at least 12 months to judge. The surgery and the medicine do different jobs, which is why they are so often combined. The detail is in finasteride and hair transplants, minoxidil and hair transplants and do I need medication after a hair transplant.

How much does it cost?

Cost varies by country and graft count: roughly $3 to $12 per graft in the US (total about $4,000 to $15,000), about £2 to £4 per graft in the UK (commonly £5,000 to £15,000 and up), with medical-tourism packages advertised lower. Turkey packages are commonly advertised from about $1,500 to $4,500 for 2,000 to 5,000 grafts, but those are marketing prices, not audited³.

It is cosmetic, so it is generally not covered by insurance, and the NHS does not routinely fund it. Cheaper is not the same as better value if it costs you a revision or a poor result. Read how much does a hair transplant cost, choosing a clinic, going abroad and, honestly, is it worth it.