Mr White

They look fine for now, but people always forget to reapply a new clear coat to the lenses to keep them from becoming hazy again a few months

Stvn2k

True, many manufacturers put a UV protection coating on the outside of the headlights, and sanding / polishing the headlight can remove this coating, causing the polycarbonate housing to oxidize and yellow within a few months. So most of the time, a clear coat with UV protection should be applied after a headlight has been sanded down and polished. I didn't want to clear the RSX headlights if I didn't have to, so I'm just gonna keep an eye on them and if they start to yellow, I'll polish them real quick and clear them.

*I've read that the S2000s headlights have their UV protection chemicals mixed in with the actual polycarbonate material, it has no coating, so for you guys here, a clear coat isn't going to be needed.