Tried the Turtle Wax headlight kit on the original headlight that was not replaced by insurance.
The kit includes a heavy duty polishing compound for lighter UV damaged headlights in addition to the wet sanding kit, being conservative I just went with the polishing compound option with the sealant and I'm very happy with the result. It's not perfect but for the level of effort vs result I'm more than happy to recommend the product, from memory it was one of the cheaper restoration kits.