Well i went to the store today to get some glass cleaner and stumbled apon this product... leme give you back round... i hadnt washed the windows for about 1000 miles (road trip) and by the time i came around to doing it they where so horrible mud was caked on it and windex would just smear that around. So anyways i went into a store and picked up some random glass cleaner (bad i know) however the s*** worked so well i came to rave about it! The product is Stoners- Invisible Glass cleaner i used that and crumbled newspaper bam! in 3 applications it trully did not look like a window was there... simply amasing.