I had my headlamps' lenses professionally polished back in April or so of last year - they came out looking almost new. But they've already started yellowing again. Trick is to seal 'em up nice once they're polished so they don't turn again. (Which, you know, I didn't do...)

So regarding the Fast Brite - I have doubts it'll last for more than a week or so but would be happy if it does.

Staying tuned,
-V