Replacement plastic for headlights
#20
#22
#23
Umm I already posted you can wet sand and clear with an automotive grade uv resistant clear coat like upol#1. This gives a new layer to polish if it yellows. Mine are still clear 6+ months later and my car is now parked outside 24/7 and never covered. If you choose to polish every couple of months then yes you are slowly thinning out your lights, but I would think you woukd have to polish them 20+ times before you thinned them out enough to weaken the plastic.
#29