Surprisingly my hair transplanted grafts started to immediately grow after about two weeks. I still had crust on my head from the transplant and the hair started to peek through. I was doing my research intensively before that and haven’t found one with almost instant results as i did. I was told from my doctor that it could take up to a year to see the full effect. It definitely met my expectations but the other non transplanted hair isn’t immune to DHT so this could lead to dissatisfaction again in a couple of years.
Most hair appears to grow immediately, but falls out in 2-4 weeks. About 1 in 20 people get instant growth that continues from the day the transplant was done. Most are somewhere between the two examples I discussed above. As hair loss is a progressive process, you should consider another FUE and if you are satisfied with your surgeon, go back and see that surgeon for an opinion about another FUE.