How many grafts do I still have available on the back of head? (Photos)

It looks like your donor area has experienced some degree of depletion from the two prior transplant sessions, though there’s still a moderate amount of density remaining. Based on your photos, the central occipital area (back of the head) still appears to have viable follicles, but the safe donor zone has definitely been reduced compared to before.

On average, a typical donor area can safely yield 5,000–7,000 grafts over a lifetime without causing visible thinning. Since you’ve already had two procedures, you may have around 1,000–2,000 grafts left that can be harvested conservatively from the mid and lower occipital region. However, this estimate can only be confirmed through a detailed in-person assessment using magnification tools and donor density mapping, as factors like hair caliber, scalp laxity, and previous extraction pattern significantly affect the count.

If you plan another small session just to refine the frontal area, focusing on strategic placement and density blending may provide a noticeable improvement without overharvesting the donor zone.

You’re being thoughtful about avoiding overuse of the sides — that’s a wise approach to maintaining long-term scalp health and natural appearance.