Originally Posted By: 28oz
I've done several methods. They all work.....for a while. Usually only a few months at best before clouding over again (even the kits with the "sealant wipes").
Originally Posted By: Char Baby
I have done the toothpaste thing on the headlight assemblies and it only works for a few weeks as does any headlight polishing compound.
This is the biggest problem with any and all of the headlight polishing kits. It's quite labor intensive, (if you do it right), and it doesn't last. When I retired I bought a Meguiar's Headlight Polishing Kit, and took several hours to do my truck, both headlights and taillights. I figured because I wasn't working anymore, and it would be in the garage, instead of sitting in a Sun drenched parking lot 10+ hours a day, it would stay nice.
It did until we bought our new car and I started parking it outside. Now they are the worse they've ever been. (Even though the vehicle is protected from direct sunlight by the house for over half the day). It didn't take but just a few weeks before they discolored and started fogging over. If it wasn't such a hassle putting them on and taking them off, I would buy a cover. The only way you can protect a vehicles components from UV light damage, is to not allow it to be exposed. Otherwise you're fighting a losing battle. Regardless of what method or product you use, or how often you use it.