Hi, first wash the car & Dry off all over, the products I use which is not for sale to the public has very fine sand within, It's on the same line as T.Cut but better, have you heard of Autoglym? if you go into any auto spares shop they should sell it, It's not cheap but does the job, if you are prepared to spend time the results will be A1, do not use in direct sunlight, do not use on the Plastic trims only the metal, if you start from the front Off/S headlight by the time you have come around to the N/S Front, ( Passenger side, then start to buff the Drivers side ( Off/S all the way round again, If your car has alloys again this takes time but you can get good results It depends on your effort. Autoglym also sells Window polish but do not use on the front screen. Good luck & happy polishing.