Yes, new hairs can begin growing finer initially and become coarser over time. Also, they can be much coarser initially and become finer over time. I see that body hair grafts often grow finer initially. This can lead to problems with the cosmetic impact of body hair grafts. If the hair is there, but you can't see them with body hair transplants, the benefits of body hair can be minimal. This is why I now recommend a test procedure with body hair to make sure that the patients are happy with the results before larger procedures are performed.