a wordGraft
also: follicular unit · FU · hair graft
A hair clinic's graft is a follicular unit of one to four hairs. A surgeon's graft is transplanted tissue. The same word prices two different things.
In the older surgical sense, tissue moved from one place to another and expected to take. In the hair trade — where most of this subject's graft prices come from — a graft is one follicular unit: a naturally occurring cluster of one to four hairs with its sebaceous lobules and arrector pili muscle. The unit was described histologically before it was ever sold.
First seen. late 15c. for the horticultural noun; 1868 and 1871 for the surgical senses
In hair restoration a graft is one follicular unit, not one hair. A price per graft is a price per cluster. Cited · etymonline-graft
The story Cited
Headington described the follicular unit in the Archives of Dermatology in April 1984, and the International Society of Hair Restoration Surgery quotes him in its own terminology standard: "The follicular unit (FU) of the adult human scalp usually consists of two to four terminal follicles and one or rarely two vellus follicles, the associated sebaceous lobules, and the insertions of the arrector pili muscles of the terminal follicles." The society's patient page puts the same thing in trade terms: clinics remove "natural clusters of hairs grouped in 1-4 hairs each", with punches "from 0.7 to 1.2 mm in size".
That range of one to four is the whole problem with the unit as a price. The society's 2019 terminology document defines two further measures, Calculated Follicles per Graft Expected and Calculated Follicles per Graft Achieved, which exist because a graft count on its own does not say how many follicles were moved.
Inference — the arithmetic follows from the definition. A donor area yielding three-hair units can be dissected into single-hair grafts, and the same hair then sells as three times the number. Nothing on a quotation states the follicles-per-graft figure, so two clinics quoting 4,000 grafts may be quoting hair counts that differ by a factor of two or more.
How it works Cited
Two numbers make a graft quote readable and neither is usually published: hairs per graft, and where on the donor area the grafts came from. The society names overharvesting the donor area, or harvesting outside the safe zone, as "an uncorrectable problem", and it names "the problematic rise today of unlicensed technicians (the so-called black market)" as the risk attached to volume work.
Today Inference
As of 17 September 2026 every hair price on this site is recorded with the unit the seller used — per graft, per session or per package — because the three cannot be converted into one another.
The particulars
| region | Everywhere |
|---|---|
| confidence | high · updated 2026-09-17 |
What it connects to
Pages that point here
Sources
- graft (n.1), graft (v.) — etymology — Online Etymology Dictionary, compiled by Douglas Harper · link (read 2026-09-17)
- Transverse microscopic anatomy of the human scalp. A basis for a morphometric approach to disorders of the hair follicle — Headington JT. Archives of Dermatology 1984 Apr;120(4):449-56 · link (read 2026-09-17)
- A 2019 Guide to Currently Accepted FUE and Implanter Terminology — International Society of Hair Restoration Surgery; dated 15 July 2019, editor Robert H. True · link (read 2026-09-17)
- FUE — what is it? — International Society of Hair Restoration Surgery · link (read 2026-09-17)
Where it came from: Cited a source named here · Harvested pulled from an open dataset · Trade practice how the trade works, hedged · Inference this project's own reasoning · Field somebody stood there. This record as JSON.