There are two simple tests to check if the EPIC Paint Correction compounds have not broken down. First, check to see if the compound looks wet and nearly transparent. If it does, the compound is broken down completely. If the compound still looks thick and creamy, use your finger to feel the compound to see if it feels thick and gummy or smooth like butter. If the compound is somewhat thick and gummy, it has not broken down all the way, and you should continue buffing. If the compound feels smooth like butter, you have broken down the abrasive and are ready to wipe off any excess product.