Well mostly the difference was the native hairs in those areas which after 2-3 years post-op, became bald as opposed to thin (where no transplanted hairs were planted)
Coming into the 5th year post-op, in my 2nd FUE just 2 months ago, I had about 1000 grafts added to the previously transplanted areas (Dr Mwamba's clinic, who viewed my hairline carefully and it was evident that it needs a fix)
I would say I lost just a little bit of the area where the transplanted hairline was made in the first FUE, which originally had no native hair in them, meaning the transplanted hairs were those that thinned out
Again, not by much, but it wasn't the same as first year post-op.