This is a very common question, and doctors for many years just winged the answer.br br In 2006 Dr. Rasman and I did a very controlled study to see how long it actually took before grafts were permanent. Surprisingly it was 9 days. Some of the grafts started to become permanent at 6 or 7 [days], but at 9 days every graft that we tested over a series of a number of patients were permanent. So if you tugged on the top of the graft, the hair would come out, but the actual follicle would stay in place.