Some of my HT hair came in not at all like my recipient area hair, nor even like the donor hair from whence it came. Strange, if you ask me. But over time it came to become more and more like the surrounding hair, and it bagan to blend in extremely well. Even at first, some of the hairs came out grey in color. I am a bit older than many of those posting here (50, almost 51) and I do have just a tiny bit of grey at the temples and around the front of the ears. But how those HT hairs could be grey when they were not before, and why they are no longer grey after 18 months (no coloring from a box either!) is beyond me.