Normally, there are up to 100 grafts on one square centimetre of scalp. But for a satisfactory result, 10 – 25 grafts per square centimetre are sufficient. It depends on how far the hair loss has progressed and how large the bald patches are that need to be filled. The quality of the donor area also plays an enormous role.
For example, one person can have 50 grafts per square centimetre, and another can only have 10 grafts per square centimetre. This varies from person to person, as it also depends on hair characteristics, the type of hair, and the quality of hair in the donor area.
For example, with thin and straight hair it is difficult to remove many grafts without the remaining hair losing its fullness. With other types of hair such as thick or even curly hair, more grafts can be harvested, as they appear fuller on their own. A hair analysis can provide more information about your situation.