Yes, you can use a clay bar on headlights! Clay bars are effective for removing contaminants such as dirt, grime, and oxidation from various surfaces, including headlights. This process can help restore clarity and improve the overall appearance of the headlights.

Benefits of Using a Clay Bar on Headlights:

1. Removes Contaminants: Clay bars can effectively lift off embedded dirt and pollutants that regular washing might miss.
2. Restores Clarity: By removing oxidation and grime, clay barring can help restore the clarity of cloudy or yellowed headlights.
3. Prepares for Polishing: After using a clay bar, the surface is smoother, making it easier to apply polish or wax for further enhancement.

How to Clay Bar Headlights:

1. Clean the Headlights: Start by washing the headlights with soap and water to remove loose dirt.
2. Use Lubrication: Apply a clay bar lubricant (or a quick detailer) to the headlight surface to prevent scratching.
3. Clay the Surface: Gently rub the clay bar over the headlight in a back-and-forth motion. You should feel the surface becoming smoother as contaminants are lifted.
4. Wipe Clean: After claying, wipe the headlights with a microfiber towel to remove any residue.
5. Polish and Protect: Optionally, follow up with a polish and a sealant or wax to protect the headlights.

Visual References:

Here are some images that illustrate the process and results of clay barring headlights: