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RO The limit is length, not survival. Body hair keeps the growth cycle it was born with. Its anagen phase is far shorter than scalp hair’s, so a body graft that takes and grows well still stops at a few centimetres and then sheds. It can fill space and add visual weight; it cannot be grown long or styled like scalp hair.
A smaller share is available at any one time. On the scalp the great majority of follicles are in the growing phase simultaneously. On the body a much larger proportion is resting, and resting follicles cannot be harvested. Two donors of the same visible area therefore yield very different numbers of usable grafts on the day.
| Source | Typical role | Main constraint |
|---|---|---|
| Beard | The strongest body donor; bulk and coverage | Thick calibre — wrong in the hairline |
| Chest | Filling behind the hairline, blending | Fine, short, variable survival |
| Abdomen and limbs | Last resort in depleted donors | Lowest and least predictable yield |
It is a supplement, never a substitute. Body hair transplantation exists for people whose scalp donor is already limited or spent. It is not a way to raise the graft number in a first procedure, and a plan that relies on it to reach a headline figure is a plan built on the least predictable hair available.
Related terms
- Beard to scalp hair transplant
- Donor area depletion
- Hair growth cycle
- Safe donor area
- Vellus and terminal hair
For how scalp donor capacity is assessed first, see the donor area guide. For cases where a previous procedure left little scalp donor, see revision hair transplant.
