A practical U.S. guide to restoring cloudy headlights, protecting the lens afterward, and knowing when replacement is the smarter move. THE 30-SECOND VERDICT Yes. Headlight restoration works when the cloudiness is on the outside of a plastic lens and is caused by oxidation, UV damage, light scratches, or failed surface coating. It can make the lens dramatically clearer and improve usable light output. It cannot repair cracks, failed seals, internal moisture, burned reflectors, electrical faults,…