For the compound to offer the optimal results, you need to ensure the scratched area is cleansed before the application. The cleaner the surface is, the sooner it will absorb the formula. Wash the car with a warm and soapy solution. Rinse the vehicle with clean water and allow it some time to dry. You can also use a clean, cotton cloth to dry the surface. A clean car makes it easier for users to spot blemishes, stubborn stains, and finest scratches.