when a car is painted/laquered the surface although it looks smooth isnt 100% so you very lightly sand it down . so that its like glass then polish up gives it alot deeper shine and looks a 100times better . if you look on you car close up your bound to find some areas were paint is slightly wavy , just gets rid of that thats all .hmmm thanks alot mate.. really helped.. last thing.. what do you mean by fully flat it?![]()