1. Rinse dirt from the painted surface thoroughly with Autogrim Bodywork Shampoo Conditioner. 2. Shake the bottle well before use. 3. Use a cotton cloth to move and apply your hands straight and parallel to scratches on a cold, dry painted surface. You dont have to scrub hard when removing visible scratches and stains. Process while checking your progress. 4. Gradually weaken the force to make the surface shiny. Wipe off any remaining liquid from the painted surface with a clean cotton cloth. 5. For finish, we recommend using Autogrim Super Resin Polish to protect the paint and achieve a deep gloss.