[aschen]

are you using one of the gritted polishes or actually wet sanding? I think you need to do the latter to have it last

I had good luck with this kit
https://www.amazon.com/3M-39014-Lens-Renewal-Kit/dp/B002UJ13QO/ref=sr_1_6?s=automotive&ie=UTF8&qid=1500401573&sr=1-6&keywords=3m+headlight+restoration+kit