Quote Originally Posted by NeiljohnUK View Post
Most plastic headlights need sealing after polishing to prevent any micro cracks present propagating, and to increase UV aging resistance
Is there a sealing product you'd recommend? I wet sanded and polished a minivan's headlights and they re-fogged surprisingly quickly. It took less than a year before it was noticeably opaque again. I assume it's the UV protection has all given up in them. Is that right?