Follicular Unit Extraction · Donor Dominance · CityLink Mall
A transplant does not produce new hair. It relocates follicles that are genetically resistant to DHT into areas where the native follicles were not — which is why it works permanently in the transplanted hair, and why it does nothing at all to stop the untransplanted hair around it from continuing to thin.
Androgenetic hair loss is not a scalp problem. It is a property of individual follicles. Follicles in the frontal hairline, temples and vertex carry androgen receptors that respond to dihydrotestosterone by shortening their growth phase with each cycle — the hair produced becomes progressively finer, shorter and lighter until it no longer emerges meaningfully. Follicles in the occipital scalp, the band at the back of the head, do not carry that sensitivity to the same degree. They are unaffected by the same hormonal environment.
Donor dominance is the observation that a follicle retains this behaviour wherever it is put. Move an occipital follicle to the frontal hairline and it continues to behave as an occipital follicle — it grows, cycles normally, and remains resistant to DHT for as long as the person lives. That is the entire biological basis of hair transplantation, and it was established long before any of the current instrumentation existed. The transplant is not a treatment for the disease. It is a relocation of tissue that the disease does not affect.
Follicular unit extraction is the harvesting method. Hair grows in natural groupings of one to four follicles sharing a sebaceous apparatus and an erector muscle, and these units are removed individually with a small cylindrical punch rather than excised as a strip. Each unit is then placed into a recipient site created at a specific angle, direction and density. There is no linear scar; instead there are many small circular scars, which are individually inconspicuous but which represent a permanent reduction in donor density.
That reduction is the constraint that governs everything. The donor region contains a finite number of follicular units, harvesting is not repeatable indefinitely, and a donor area thinned by over-harvesting cannot be restored. A twenty-six-year-old with early recession who wants an aggressive juvenile hairline is asking to spend a fixed lifetime resource on the area that will look least appropriate at fifty, while the vertex that will need it later goes unfunded. Planning a transplant is as much an exercise in rationing as in surgery.
Candidacy
Transplantation is the right answer for a specific pattern of hair loss and the wrong answer for several others that look superficially similar. Assessment is directed at establishing which you have, because a graft placed into the wrong diagnosis is a graft permanently wasted.
A transplant moves hair that was never going to fall out. It does nothing whatsoever for the hair that was — which is why stopping the medication afterwards undoes the result.
Realistic Expectations
The number that governs satisfaction is density, and it is the number most often glossed over. Native scalp carries roughly eighty follicular units per square centimetre. A transplant typically achieves a fraction of that, and the goal is the appearance of coverage rather than the restoration of adolescent density — which is achievable because the eye reads scalp coverage, contrast and hair calibre rather than counting hairs. A patient expecting the density of their twenties will be disappointed by a technically excellent result.
More than one session is common and should be planned for rather than presented as a setback. Large areas, advanced loss, or the need to add density to a previously transplanted region all reasonably require a second procedure, usually a year or more after the first so that the outcome of the first can be properly judged. The timeline for a single session is itself long: transplanted hairs shed at two to four weeks, which alarms patients who were not warned, regrowth begins at three to four months, and the result is substantially complete at twelve to fifteen months.
Medical therapy is not optional afterwards and this is where most disappointing long-term outcomes originate. The procedure does nothing to the native follicles between and around the grafts, and those follicles continue to miniaturise on the same trajectory they were on. A patient who stops hair loss medications after transplantation ends up, some years later, with a band of transplanted hair standing in a field that has thinned around it — a worse cosmetic situation than before. H2LT laser and the broader medical programme run alongside the surgery, not instead of it.
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Atelier Aesthetics · Owned by AYA
1 Raffles Link, #B1-28, CityLink Mall, Singapore 039393 · +65 8023 7170
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