Hi this these days is down to the fact that most cars are sprayed with a lacquer coat not paint.the paint is a very thin layer under several layers of clear lacquer. so using cutting compound is no longer an option. the paint is now blown on in a mist in a special painting booth which is also an oven. to bake the paint on. cellulose paint is no longer used since the mid 1980's so the chances of you having one sprayed with it is next to impossible.
so time to get it looked at by a paint shop with professionals.
headlights these days have to be replaced completely.
We have never had any problems with headlights hazing on our cars: we wash headlight (and tailights & markers) the same as the paintwork . . . . . and polish at the same time we "wax" the paintwork (but the polish we use is not wax, but some sort of clear polymer appropriate for clearcoat). Nothing extraordinary - just polish once or twice a year and the headlights stay crystal clear. But, should they haze, one of the specific lens cleaners should be used.
HI, No washing well not stop the hazing of the head lights.. But as Passive Agresssor said if you wax/polish them when you do your car it well keep them clear. Your head light covers are NOT glass they are plastic that's why they haze over, glass does not..
good luck
tim
No, you can't.