Hair transplant scar repair: how does it work?
The technique for transplanting hair into scars is similar to traditional hair transplants. In a standard FUT (Follicular Unit Transplantation) or FUE (Follicular Unit Extraction) hair transplant surgery, your transplant surgeon extracts hair grafts (tiny clusters of hair follicles) from the side or back of your head. They then implant them into the thinning or balding areas (usually your crown and/or temple) where your follicles no longer produce hair.
However, certain complications make hair transplants on scar tissue a more complex procedure.
Tissue stiffness and lack of visibility
When your skin is scarred, the hair follicles that existed in the original skin are usually lost. That means it’s more difficult to see where your original hair grew. The best hair transplant surgeons make your new hair look as natural as possible by following the direction and placement of your original hair, which is more difficult without existing hair follicles to guide them.
In addition, the stiffness of the tissue makes it harder to transplant hairs precisely. So hair transplants into scars are often more time-consuming and difficult to perform.
Poor blood flow compromises transplanted hair follicles
When newly grafted hair follicles are transplanted into scars, they must take root and connect with the surrounding capillaries before hair will begin to grow. Scar tissue is prone to poor blood supply, so it’s harder for transplanted follicles to get the nutrients needed for healthy hair growth [3-4].
Surgeons often leave more space between hair grafts on scar tissue so there’s enough blood supply to nourish the grafts.
Many patients who want a hair transplant on their scars need multiple surgeries [5]. This allows a hair transplant surgeon to fill in the gaps from earlier grafts. Graft survival rates are also much lower on scarred skin, so you may need more than one hair transplant to get the coverage and density you want.
While scar repair hair transplants aren’t always as straightforward as other procedures, there’s lots of evidence that they can be successful.