I used this....
Headlight Sealant, 6.5 oz. (137306)
after it was applied it didn't settle as well as I thought so I just wet sanded again and polished and Boom looked brand new. I had a write up on here somewhere but I cant find it. only problem was the resealed headlight now looked better than the other so I had to do them both.
Sorry for the late response.