you need sand paper, 1500 and 2000. Also you need to buy a polish kit from autozone, kragen, and ive seen them at walmart too. then you need to sand it with 1500 horizontally, then with the 2000 (both wet sanded) vertically. Then you polish it using a drill, a high power drill, the faster the better! Polish within small portions. After its all done, you have to WAX it as well. I didnt wax mine and it faded back.So whenever you wax your car, wax the headlights. It will protect it from fogging again. Good Luck.