I used the Meguiars kit on some (almost yellow) headlights on my car last night.
I was very impressed with the results. Recommended for sure
As said don't bother with a specific overpriced kit; all you're doing is refinishing plastic.
What you are actually doing is completely removing the damaged anti-scratch UV resistant coating to expose the softer polycarbonate underneath. You can make it look like new, for a while, but nothing you can apply to the plastic will provide the same level of protection.
