Isopropanol Alcohol (IPA) is an alcohol-based chemical cleaning agent designed to remove oil and residue from many vehicle painted surfaces. To be used after you have machine polished, mix with water up to 50:50 and use in a low pressure srpay. This will remove any residue of polish and oil. You can also use as a body wash before applying sealants or wax polish to make sure the suface is squeaky clean!!!! 99.9% pure!!!