This depends on the hair texture (tightness of curl), size of the donor area, the density of the donor hair, and the technique used. Follicular unit extraction (FUE), in the hands of an advanced practitioner, is able to harvest hair outside the traditional donor zone, thus widening the pool of prospective donor follicles. Additionally, if you are a candidate, FUE hair transplant using uGraft makes body hair a viable donor source, creating a yet greater pool from which to harvest. However, most African American patients must first undergo a trial procedure to determine whether their transection rate is acceptable for large-scale transplant.
Web reference: http://www.dermhairclinic.com/ethnic-hair-loss/