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RO A graft outside the body faces three separate stresses. They are not variations of one problem, and a clinic can control one while losing another.
| Stress | What it does | What controls it |
|---|---|---|
| Drying | Kills exposed cells within minutes | Grafts stay submerged, never on open gauze |
| Crushing | Damages the bulb through forceps pressure | Grafts held by tissue, never by the shaft or bulb |
| Time | Depletes the cell energy the graft carries out with it | Sequencing, team size and batch discipline |
Temperature is the part that is treated as settled and is not. Chilled holding solution is standard practice and clearly matters when grafts are out of the body for a long time. Yet in a prospective comparison over the four to five hour window of an ordinary procedure, follicles held at room temperature survived better than chilled ones — 90.9% against 80.3% — with the difference disappearing once grafts had been handled roughly (Beehner, Hair Transplant Forum International, 2021).
The reading is not that cooling is wrong. It is that temperature is the smaller variable. Drying and crushing destroy grafts outright, and no holding solution repairs a follicle that was already damaged before it went in. Handling discipline comes first; the solution and its temperature are refinements on top of it.
Related terms
For where grafts come from before the bench, see the FUE technique. For what these stresses add up to in the final result, see hair transplant success rate.
