are you sure they grew? Almost all transplanted hair fall out first and then start to regrow. This is an initial hair that was transplanted , that is why its so thick comparing to the other. In my case i just understood that those hair stuck and either dead completely or blocking the way for a new hair . Also such hair gave me inflammation. As it would be a foreign object that force my immune system to reject it. Anyway after around 6 months i just removed them with pincers. They came out extremely easily ,like nothing was holding them .Most of them were folded closer to the follicle as when they were implanted , they were not put straight in to the channel and bended .And i think that is the reason why they didn't survive. Just share my story, consult with your doctor about this situation.