It is not possible to count each hair follicle one by one during the hair transplant because each hair follicle exists in a different stage on our scalp: growth, transitional, and resting phases.
We can see the hair follicles that are in the growth phase with the naked eye. The hair follicles in the transitional and resting stages exist inside the hair tissue, are not even visible to the eye, and are submicroscopic. However, nowadays we can count the tissues because we arrange the grafts in groups of 10 or 20 while harvesting them. These strings of 20, placed on a square cloth, can contain 200 to 300 grafts. We usually transplant 3000 to 4000 grafts during a surgery. In some cases, if our patients have other genetic structures, especially those who come from Saudi Arabia, and the region, or those who have wide napes or heads can have 6000 grafts transplanted. How many hair follicles does one graft have? In order to answer this, we usually multiply the total number of grafts by 2 or 3. For example if we say 4000 grafts, it means we transplanted around 12,000 hair follicles.
As it is not possible to directly count the hair follicles it is better to count the number of tissues. We let our patients know how many tissues we transplanted, and how many hair follicles will grow after surgery.