How does the recipient area change after 1 or 2 hair transplants? If 1 mm punches are used to place the grafts, does it result in less yield from future hts due to scarring or does the tissue return to normal? How would this effect something like acell if it does turn out to be the solution for the limited donor supply problem?
I think you are referring to the donor area. No surgeon should be creating recipient sites with a punch in modern day hair transplant surgery.
If you mean the donor area (back of the head) that has been harvested with 1mm FUE punch, then the logical answer is that the donor area would be depleted of however many grafts/hairs were harvested. The donor area, depending upon your donor density, can supply 4000-9000 grafts in your lifetime. As the number of grafts come out, the remaining supply will obviously decrease by that same amount. The resultant scarring of the donor area may (or may not) impact any future FUE surgery. Each and every patient is different.
Finally, I do not know how ACell will impact hair transplant surgery in general. It is anybody’s guess at this point.