I use the Stoner Invisible Glass now on a fairly regular basis. Is this enough to ward off the ugly oxidation that occurs down the line?

 

What I think your talking about is not preventable with any cleaners.

The clear plastic lens is constantly being sandblasted with road grit and debris. It is basically unavoidable. Higway driving is the main culprit, and more so if you live in an area that they sand the roadway in the winter. Over time the lens loses its luster and has that hazy look to it.

 

wait....the lens is plastic???so what about glass lens?

 

You can get a headlight protection kit - for instance, Clear Guard, X-Pel, InvisiGARD and others are offering this.

 

I use Plexus on my lense covers as well as my clear bra. It is a plastic cleaner that you can use on anything plastic. It will keep the lenses on the headlights crystal clear. Also for my clear bra, it keeps the film soft and clear just like the first day I had the bra put on. I highly recommend this product if you are looking for something to clean a clear plastic.

Linky