Sand/scrape off the outer film on the headlight, then sand with 1000 grit and spray with a clearcoat that uses hardener. Eastwood has some 2 part spray bomb stuff now that works decent. A/M is very hit or miss. Some are ok, but I have bought some that have you hunting racoons without enough adjustment to fix it. They also do not focus the light beam nearly as well so are not as bright. Fix the oem ones as suggested above and they will likely last as long as you have the car.