Hair Transplant
What a hair transplant is
Hair transplantation is a surgical procedure that redistributes a person's own hair follicles from a donor area — typically the back and sides of the scalp, where follicles are genetically resistant to the hormone DHT — into areas of thinning or baldness. Because the moved follicles largely retain that resistance, transplanted hair usually keeps growing long-term, although graft survival varies and donor hair can thin with age.
The two main techniques are FUE (follicular unit extraction), which harvests individual follicular units directly from the scalp, and FUT (follicular unit transplantation, or "strip"), which removes a strip of donor skin that is then dissected into grafts. Variations such as DHI use a specialized implanter pen. A transplant redistributes existing hair rather than creating new follicles, so results depend on donor supply, the extent of loss, and the surgeon's skill — and it does not stop ongoing loss of the native, non-transplanted hair, which is why surgeons often pair it with medical therapy. That therapy has its own side effects: finasteride, a common choice, has reported side effects that are not only sexual: its label lists sexual side effects, some of which men report continued after they stopped it, as well as depression and suicidal thoughts and breast and semen changes; how often the persisting problems happen is not known (see the FAQ 'Is finasteride safe?'). The UK regulator (MHRA, May 2026) advises stopping finasteride 1 mg immediately and contacting a doctor if depression or suicidal thoughts develop. Finasteride must not be used by anyone who is or may become pregnant.
Every transplant leaves scars (a line with FUT, small dot scars with FUE), and complications such as folliculitis, numbness, poor growth and donor over-harvesting are reported (Loganathan 2014, PMID 25368473; Romera de Blas 2026, PMID 41709896).
This page is an overview; see the frequently asked questions below for specifics on cost, pain, recovery, grafts, results and risks.