Transplanting hair into scar tissue — whether from previous surgery, injury, or burns — is one of the most technically demanding applications of hair transplant surgery. Understanding the specific challenges and realistic outcomes helps patients approach this type of procedure with appropriate expectations.
The fundamental challenge of scarring is vascular. Scar tissue has reduced blood vessel density compared to normal scalp tissue — it is relatively avascular because the normal capillary network has been disrupted or replaced by fibrotic tissue. Transplanted grafts depend on establishing vascular connections in the recipient tissue for survival, and the reduced vascularity of scar tissue makes this harder, resulting in lower graft survival rates than in normal scalp.
Typical graft survival rates in scar tissue range from 50 to 70%, compared to 90 to 95% in normal scalp. This has planning implications — procedures for scar coverage typically require planting at higher density (to achieve adequate coverage despite lower survival) and may require multiple sessions to build up coverage progressively.
The type of scar matters. Recent, active scars are poor recipients — wait at least twelve months from the original injury before transplanting into a scar to ensure complete maturation. Linear surgical scars (including FUT donor scars) are among the most commonly transplanted sites. Burn scars require specific assessment because the depth and extent of vascular damage varies with burn severity.
Patient expectations must be calibrated to the biology. A scar coverage procedure can significantly reduce the visibility of a scar and dramatically improve the patient’s ability to style their hair over it — but complete invisibility of the scar through hair transplantation is an unrealistic expectation in most cases.
Related reading
