Head lights getting hazed from abrasion?

[ABSPLASTIC]

Meguiar's Plastx works well, but eventually your headlights haze and yellow again within a few weeks. It's a routine touchup job, but no way in hell am I paying $$$ to get new headlights or have them professionally done for $100. Just take 10 minutes of your time to polish with Plastx and you're good to go.

[RedRide]

Originally Posted by ABSPLASTIC

Meguiar's Plastx works well, but eventually your headlights haze and yellow again within a few weeks. It's a routine touchup job, but no way in hell am I paying $$$ to get new headlights or have them professionally done for $100. Just take 10 minutes of your time to polish with Plastx and you're good to go.

It's UV sun light that hazes them.
The headlights come with a anti UV coating on them .
The problem is, this coating starts to wear off after few years and it starts hazing.
Then, when you polish them for the first time to remove any initial haze, you are also removing any remnants of the anti UV coating still on the light.

It's not that it really hazes faster after an initial polish, you mostly just notice it more when the lights are crystal clear again.
So, you of course have to re-polish them occasionally.
However, if you never polish them, to begin with, the haze will just keep building up and become increasingly difficult to remove.
So, it's six of one and a a half dozen of the other.

I also use Meguiar's Plastx and polished my headlight on my '09, for the first time just last week and, they are now crystal clear.
I should add that my Yaris is not garage kept.... so, I can't complain.
You should see the horrible condition of some of mat neighbor's headlights .