I've used it maybe 8-10 times and it gets a hose rinse each time and has been machine washed probably 7-8 times (a few times I did 2 cars on the same day). All but two of those times it was washed it was with Woolite and the last 2 times with Micro-restorer.
I did have some "fraggles" fall off at first but those were probably just loosely swen in anyway. I haven't seen any other signs of wear so far.