Yes, hair can be transplanted into scars and healed burns, but graft survival is lower than in normal scalp, so surgeons place grafts at roughly half the usual density, often over two or more sessions, and frequently start with a small test area to see how the tissue responds.
The scar has to be mature and stable first, usually at least a year old, and thick or contracted scars may need preparation before any hair will grow in them.
A scar on the scalp, in a beard or through an eyebrow draws the eye in a way that ordinary thinning does not, and patients often assume nothing can be done because scar tissue looks so different from skin. The assumption is wrong, but so is the opposite one that a scar is simply another bald patch. Scar tissue behaves differently at every stage of a transplant. This guide from HairX Clinics sets out what changes in assessment, technique, density and timeline, and which scars are poor candidates.
Which kinds of scars can be transplanted?
Not all scars are alike, and the type predicts how well grafts will take.
| Scar type | Typical origin | How it usually responds |
|---|---|---|
| Linear surgical scar | Neurosurgery, facelift, old strip (FUT) harvest | Good; flat, mature scars take grafts well at reduced density |
| Traumatic scar | Accident, laceration, fall | Variable; depends on depth and whether the scar is raised or depressed |
| Burn scar | Thermal, chemical or electrical injury | Most demanding; thin, poorly vascularised tissue with possible contracture |
| Scarring alopecia (healed) | Lichen planopilaris, discoid lupus, folliculitis decalvans | Only once the disease has been inactive for at least one to two years; relapse risk remains |
| Keloid or hypertrophic scar | Overgrowth of scar tissue | Poor candidate until treated and flattened; surgery can provoke further growth |
Beard and eyebrow scars follow the same logic, and beard grafts in particular can hide a facial scar well because beard hair is coarse and the surrounding density is high. Our guide to beard transplantation covers the beard specifically.
Why is scar tissue harder to grow hair in?
A transplanted graft survives its first days on diffusion and then on new blood vessels growing into it from the surrounding tissue. Normal scalp is one of the best-supplied tissues in the body. Scar tissue is dense collagen with far fewer vessels, less elasticity and, in old scars, a thinner layer over the bone. Grafts placed in it are slower to establish and more of them are lost.
That single fact drives every other difference. Lower density, because crowding grafts in poorly supplied tissue starves them. Multiple sessions, because each session’s grafts, once grown, bring their own blood supply and improve the ground for the next. And test areas, because the only reliable way to know how a particular scar will respond is to try a small number of grafts and wait.
How is a scar assessed before surgery?
- Age of the scar. Scars remodel for a year or more. Operating on an immature scar means operating on tissue that is still changing.
- Thickness and pliability. The surgeon pinches and rolls the scar. Soft, flat, mobile scars are favourable. Thick, tethered or contracted scars often need preparation first.
- Colour and blood supply. A pale, shiny scar with no capillary refill is the least promising. A scar that blanches and pinks up has some supply.
- Depth of tissue over bone. On the scalp, very thin tissue over the skull limits how deep incisions can go and how many grafts can be seated.
- Underlying cause. For scarring alopecia, the disease must be confirmed inactive by a dermatologist. Transplanting into active disease destroys the grafts and can spread it.
- Donor supply. The same finite resource as any transplant, and it has to be spent on tissue that will yield a lower return per graft.
What changes in the technique?
The counter-intuitive part is that the best-looking scar result usually comes from placing fewer grafts, not more. Patients understandably want a scar filled to match the surrounding hair in one go. In scar tissue that approach loses grafts. A surgeon planning a scar accepts a first-pass density of perhaps 15 to 25 grafts per square centimetre, roughly half of what normal scalp would take, then waits to see what grows and adds a second pass into a now better-supplied bed.
Other adjustments are practical. Incisions are made with care for depth, since scar tissue offers different resistance from skin and can be thin over bone. Grafts are chosen to match the hair around the scar in calibre and, where the scar sits in a hairline or an eyebrow, single-hair grafts are used at the edge to soften the transition. Some surgeons prepare thick scars with a course of treatment to soften them before any grafts are placed; that is a case-by-case judgement. FUE and DHI are both used; the choice matters less than the density decision. Our comparison of FUE and DHI explains what each involves.
What is different about burns?
Burns are the most demanding scars to transplant, for three reasons. The tissue is often thin, especially after skin grafting, with little cushion between surface and bone. The blood supply is the poorest of any scar type. And burns frequently contract, pulling the surrounding scalp or brow out of position, so that the shape of the area to be treated is itself abnormal.
For a burn, the sequence is often longer. Contracted areas may need reconstructive work before hair is considered. Test areas are almost always used. Density per pass is lower still, and three sessions are not unusual. Where the burn covers a large area of scalp, the realistic goal is often camouflage of the edges and partial coverage rather than restoration, and patients deserve to hear that at the first visit. Where the burn is small, in an eyebrow for instance, the outcome can be very good, and our guide to eyebrow transplantation describes what a brow procedure involves.
What result is realistic, and when?
Set expectations against three facts. First, survival in scar tissue is lower and less predictable than in normal scalp, so no honest surgeon quotes a percentage for your particular scar before a test area has grown. Second, the timeline is longer: growth in scar tissue is slower to start, and the final judgement on each pass comes at twelve to eighteen months rather than twelve. Third, the finished density will usually be lower than the surrounding hair, which is why camouflage, styling and in some cases scalp micropigmentation are part of the plan rather than an admission of defeat.
What a well-planned scar transplant reliably does is change a scar from something that is noticed to something that is not. For most patients, that is the outcome they came for.
How old must a scar be before it can be transplanted?
Usually at least twelve months, so that the tissue has finished remodelling. Burn scars and scars from scarring alopecia may need longer, and the underlying condition must be confirmed inactive.
Do grafts grow as well in scars as in normal scalp?
No. Survival is lower and more variable because of the reduced blood supply, which is why density is kept low and sessions are staged. A test area is the honest way to find out how your scar will behave.
Can a scar through my eyebrow be treated?
Often, yes. Eyebrow scars are small, and single-hair grafts placed at the correct low angle can hide them well. The same rules on scar maturity and reduced density apply.
Will the transplanted hair hide the scar completely?
It usually softens or hides it at normal viewing distance. Under close inspection or when hair is very short, a line or a slight difference in texture may remain. Combining a transplant with micropigmentation can close that gap.
Would HairX decline to transplant a scar?
Yes, in some cases: an immature scar, an active scarring disease, a keloid that has not been treated, or very thin tissue over bone. In those cases we would explain what needs to happen first.