your guess is as good as mine, I don't use chemicals on my car that aren't meant for it. Soap, wax, water and polish are about the only thing I put on it. I'm open to suggestions on what could cause paint to bubble (not dissolve) like that though. The clear coat is literally pulling away from the paint. There's nothing I use on the front bumper that I don't put on the rest of the car so I doubt this is something I did based on the fact taht it's happening only on the front bumper. Likewise it's NOT happening on the rear bumper.