I have slightly scarred my car when reversing. There were on my black lacquered bumper then three "abrasions", which could not be overcome with normal polishing. That is, the white primer has "durchgeschimmert". As I checked Amazon, read the recessions, then ordered Nigrin Scratch Remover and off we went. So: the lacquer paste circularly applied with a woolen cloth on the injured sites, with some pressure. Until the coating paste was dried. Then rubbed the rest Sends and lo and behold, the bruises were already barely visible. The same I have repeated again and we could not see anything. Smooth as a baby! Then I have the body with hard wax treated to protect the paint. We recommend.!