Funny this should come up. I got gum on the lower black/grey part of the bumper under the painted section and asked the car wash to remove it for me. Well they did with acetone an it turned to plastic a light grey to white color. I tried everything short of replacing it because it bothered me so much, the last this I tried before buying a new piece was the informercial stuff 'wipe new' and after the second coat it is perfect and had been for about a year with no fading. For $20 it was worth it and does not look bad, if you look really close you can see were the gum was, but i would have to show you.