It also removes oxidation, old wax, swirl marks and minor scratches. The result is a rejuvenated top paint layer, which is then ready for waxing. Polishing insures a uniform, high gloss shine. A cleaner is more aggressive than a polish. Cleaners uses chemicals to remove old wax, bug remains, tar and other build-up.
Cleaners contain heavy abrasives to deep clean and remove severe oxidation and stains.
Generally speaking, the best product to use on a clearcoat is a mild polish with gentle cleaners. These combination products get the most work done with the least effort. While a more abrasive product will generally polish the paint faster, an overly aggressive polishing product increases the risk of scratching. Even more abrasive than cleaners are rubbing compounds. Rubbing compounds are preferred for treating conventional paint finishes, and are far too harsh for a clearcoat finish.