How Long a Hair Transplant Lasts: What Has Been Measured

“Permanent” is the most used word in this industry and the least measured. One study has looked at year four. None has looked at Afro-textured hair beyond year one. This page is what has actually been counted, for whom, and what we will count ourselves.

What “permanent” rests on

A current review of hair transplantation describes the procedure as based on the principle of donor dominance, under which transplanted hair retains its genetic characteristics in its new location, and attributes long-lasting results to advances in devices and technique together with medical therapies to maintain hair density.^[1]

That is the principle, and it is the reason the operation works at all: hair from the back of the head is programmed not to miniaturise, and it keeps that programming when it is moved. Notice the second half of the sentence, though. The review credits long-lasting results partly to medication that maintains the surrounding hair — which is a way of saying the grafts are not the whole picture. We come back to that below.

The principle is not absolute, and this was measured a long time ago. In a study of 19 patients whose scalp hair had been transplanted to the eyebrows, the growth rate and greying rate of the transplanted hairs were lower than those of hairs near the donor site for most patients; the authors concluded that the recipient site may have an influence on transplanted hairs, and noted that few studies had tested the assumption that its influence is negligible.^[2]

Eyebrows are not a hairline, and nineteen patients is a small study. It is here because it is one of very few times anyone has tested the assumption rather than repeated it, and because the four-year series below reaches the same question from the other direction.

The first year, and how “survival” is counted

In 11 men with male pattern baldness, grafts were placed into tattooed templates of 1.5 square centimetres and counted over the first year: 47.3 percent of follicular units were present at one month and 57.4 percent at three months, while 92.0 percent of the transplanted hairs were present at six months and 90.4 percent at twelve months. The authors note that about half of the transplanted hairs fell out in the first month.^[3]

Two things to take from that. First, what a real count looks like: a tattooed square, the grafts inside it counted at fixed intervals, and a number that goes down before it comes back. Anyone quoting a “survival rate” should be able to say what was counted, inside what, and when. Second, the year-one figure looks good in almost every published series, ours included if we had one, and that is precisely why it is not the answer to the question this page asks. The first year is where the pictures get taken. What happens after the pictures is the next section.

The only study that looked at year four

In a retrospective series of 112 men who had a single session of strip surgery for Norwood grade 4 or worse hair loss, photographs at four years were compared with photographs at one year by a dermatologist outside the surgical team. At four years the density of the transplanted hair was unchanged in 8.92 percent, slightly reduced in 27.67 percent, moderately reduced in 55.35 percent and greatly reduced in 8.03 percent; the authors concluded that transplanted grafts may not last permanently for all subjects.^[4]

Read the shape of that, not the individual percentages. Roughly one man in eleven had the same density at four years as at one. Roughly one in twelve had lost most of it. The large middle had lost some. The authors’ own conclusion is in the sentence: grafts may not last permanently for everyone. That is a published finding from the largest series anyone has done, and you will not find it on a clinic page that uses the word permanent.

In the same four-year series, 73.21 percent of the men were still using minoxidil and 35.71 percent finasteride four years after surgery; the authors reported that the influence of either on the longevity of the transplanted follicles was not statistically significant, and that hair density could not be counted because the study was retrospective.^[4]

The picture changes even when the grafts do not

A classification proposed for hair restoration surgery states that pattern baldness in men and women is progressive and unrelenting, that a satisfactory short-term outcome can evolve into a disappointing result because of progressive hair loss, and that this lifetime risk is higher the younger the patient and the larger the area transplanted.^[5]

This is the part that gets left out of the word “permanent”. Suppose every graft survived. The hair around them is still the hair you had, on the same course it was on. A hairline that looked complete at eighteen months can look like an island at six years, not because anything was done badly but because the operation moved hair and did not stop the loss. The younger you are, the more years that course has to run.

In a randomised, double-blind, placebo-controlled trial of 79 men aged 20 to 45 with androgenetic alopecia, finasteride 1 mg daily from four weeks before until 48 weeks after a hair transplant improved the non-transplanted scalp hair surrounding the transplant compared with placebo on both photographic assessment and hair counts; visible increases were recorded in 94 percent of the finasteride group and 67 percent of the placebo group.^[6]

We include that trial for what it measured, not as a recommendation: it is the clearest evidence that the moving part is the surrounding hair, and that the moving part can be moved. It is also men only, one drug, one year. For women, for whom that drug is mostly not an option, and for Afro-textured hair, there is no equivalent trial. Whether to take anything after surgery is a conversation for a prescriber; whether the hair around your grafts is on a course of its own is a question to ask before you book.

Where the curve falls: scarring alopecia

Everything above is pattern hair loss in men. Most of the people we treat have something else — traction alopecia, CCCA — and for scarring conditions the published curve does not plateau, it falls.

A systematic review of hair transplantation in primary cicatricial alopecia, covering eight observational studies and 123 patients, reported weighted graft survival of 82.7 percent at 7 to 12 months, 73.3 percent at 13 to 24 months, 58.4 percent at 25 to 36 months, 55.4 percent at 37 to 48 months and 39.6 percent at 49 to 72 months, concluding that survival peaks at one year and diminishes over time.^[7,8]

One series inside that review held steady to two years, and it is worth seeing why. In a series of 32 patients with lichen planopilaris, a different scarring alopecia, surgery was performed only on inactive disease, and graft survival was 78.62 percent at twelve months and 79.96 percent at twenty-four months. The histopathology variables examined at the time of transplantation, including epidermal atrophy, fibrosis and inflammatory infiltrate, were not found to have any effect on graft survival.^[8]

Neither of those is traction alopecia and neither is CCCA specifically. We have written separately about what that borrowed curve does and does not mean for the edges, and about the tests that come before surgery on our page on why transplants fail. The point here is narrower: for the conditions most of our patients have, “how long does it last” has a published answer, and the answer is a downward slope with wide error bars.

Afro-textured hair: nobody has measured it past the first year

We searched PubMed on 20 September 2026 for hair transplantation in patients of African descent or with Afro-textured hair and opened all sixteen records. None reports the survival of transplanted hair at twelve months or later. The largest series, 64 patients across seven clinics, reports transection at extraction rather than what grew; the CCCA series reports visible growth in two patients at four to five months. Adding follow-up, long-term or survival terms to the search returned no records.

Sixteen papers is the whole published world of hair transplantation in people who look like our patients, and the ones with the most patients in them are about how to get the graft out without cutting it. That is a real problem and worth solving. It is not the same as knowing what grew, and it is nothing like knowing what was still there five years later. The search, with every query and count, is in our evidence library.

What we will count

What we will not tell you

• That the result is permanent. The only four-year series says it may not be for everyone, and it was not done on your hair.
• A survival percentage for your transplant. The counted figures come from eleven Korean men and from scarring alopecia cohorts; neither is you.
• That a photograph at twelve months tells you what year six looks like. It tells you what year one looks like.
• What to take afterwards. That is a prescriber’s conversation, and the only trial is in men.

What to ask — here or anywhere

1. How many of your Afro-textured patients have you photographed at three years or later, and what fraction of everyone you operated on is that? The second half is the question.
2. Were the before and after taken the same way? Lighting, angle, wet or dry, hair length. Our photograph interpreter shows how much of a result can be made in the camera.
3. What is the hair around the grafts going to do, and what is your plan for it? A surgeon who has not thought about the moving part has not thought about year six.
4. If my density drops at year four, what happens? Listen for a plan and a cost, not a reassurance.
5. Show me the source for any survival figure you are given, and ask what was counted, inside what, and when.

The first eighteen months, week by week, are on the aftercare page. If you want these questions answered about your own scalp, send them to us and we will answer in writing, including where the answer is that nobody knows.