Question = ” I bought a used car, & the windshield has a haze or film on it, that won’t come off. I wash it & then it comes back, what can I do?
Answer = The haze or film is usually from cigarette smoke. That’s right either the ex-owner of your car was a smoker or if the haze/film just became a problem someone while driving or riding in your vesicle is smoking. The bad news is you’re stuck with it, the good there is help.
After 20 years of installing auto glass, I’ve seen people try everything, with no luck. It always comes back even if the glass is replaced. Why? The smoke gets in the A/C/Heat Filters, the dashboard, headliner, & upholstery. So, when you use your A/C or heater the smoke is recirculated especially on the windshield if you use the defroster.
The Cure is simple but has to be repeated often. First you’ll need to get a couple items
#1. Paper Towels (thicker, the better),
#2. Glass Cleaner (any will work but the best to use is a foaming glass cleaner, comes in a spray can & can be purchased at your local auto supply store),
#3. A bottle of Rain-X Anti-Fog. The first step is to wash the interior of the windshield at least twice making sure to remove any/all signs of the haze/film (tip if you can remove the rearview mirror), then take a clean paper towel & apply the Rain-X Anti-Fog to the windshield be sure to keep adding more to the towel & to cover the entire windshield. It seems to work & last longer if you apply a fair amount(don’t skimp or soak) Depending on the amount of time you drive & how often the A/C or Heater is used, will determine how often this process will need to be repeated.