I bought 600, 1000 and 2000 grit sand paper, a plastic spray bottle and a clear coat in the can spray. Taped off around head lights, wet sand with 600 grit and then with 1000 grit, sanded lighter(Pressure) and finally with the 2000 grit, even light pressure. Keeping the lens wet at all times. When done sanding, wiped with paper towel(drying) and then wiped with alcohol. Then taped up area large enough around head lights for over spray and lightly (each coat) did 3 coats on the lens. Look good and a lot better lighting at night. After a couple of days wax them with a good polish. Invest a couple of hours and about $10. Forgot to include that lens will look frosted, after sanding and prepping them, but will clear up when you clear coat them.