Its very durable. When we went feb 2013 DD5 at the time had it done. Didn't smear. The CM also lets us know if something were to happen to swing back by and they would fix it free charge. We used the face paint kiosk over by the Matterhorn.
It handles touching pretty well, but my niece's smudged a bit during her nap. Any water, however, will do a number on it (which is nice because it comes off so easily!)