I'm a bit hesitant to ask this question being as it seems to be a newbie question, but whatever.

My headlight lenses are yellowing. Is there something out there that restores them or am I better off just getting some new lenses or with something like cefiro's or AE's?

 

check the detailing section, pepole usually use a super low-grit sandpaper and wetsand it off. i hear there are kits you use with an orbital sander for $25 and itll clear up the lenses

 

I thought sanding plastic would only make it dull?

 

try Mothers plastic polish to renew your lens's. This will restore it. If its really bad then i guess you could try getting a new pair.

 

Any good rubbing compound will work, I've also heard mag cleaner does a good job.