Over harvested donor area— sufficient for a second FUE?

Unfortunately, the area that was harvested before is not available for any more harvest, as any more hair removed from that area will make it much worse. Having said that, your sides and still mostly intact, but I would recommend that you be very careful and very conservative in future transplants, to avoid the same problem. Also, I would recommend that you take medications to decrease the progression of your hair loss.

The hair in the safe zone is perfectly fine to harvest. In an overharvested posterior donor zone, using hair to the lateral most portion of the safe zone is perfectly acceptable.

During an FUE procedure, the grafts should always be harvested in a random and homogeneous pattern with adequate spacing between harvest sites to avoid overharvesting. The remaining hair surrounding the extracted hair grow to cover the spots, making the FUE harvesting virtually undetectable.In your case, the central part of your safe donor area has been overharvested. The use of micropigmentation can help camouflage overharvested spots.Your surgeon should be able to extract the necessary grafts from the sides of the donor area. I recommend a face-to-face consultation with a hair restoration surgeon in your area.