You will need the WD-40 Multi-Use Product, a few cotton or microfiber rags, and a water and car shampoo cleaning solution. It’s also recommended that you wash your car first.
Start with a clean surface. If it’s recently washed, dry the lights with a microfiber towel; otherwise, use a damp towel to wipe off any excess dirt or grime before proceeding.
You can also spray the WD-40 directly on the headlights and taillights, let it sit for a few minutes, and wipe off the excess with a dry towel before buffing lightly.
Wash off the WD-40 residue with water and car shampoo. Then, use a sponge to remove all traces of WD-40, rinse with clean water, and wipe dry with a microfiber cloth.