What is the best way to clean up cloudy headlights?

 

there are a few conditioner kits out there

 

lots of people will have lots of opinions

as for me. What has worked best and takes little time, my Harbor Freight special electric sander/polisher and cutting paste. Yes, the same expensive cutting paste you use to get rid of orange peel from clear coat

 

You could replace them. If you do, put plastic film over them to make the replacements last longer.