You tube is great. I was watching music videos and saw an advertisement about restoring yellowing and faded headlights lenses. The front lenses are terrible on my wife's G8. We went to Walmart and bought these supplies. Four types of wet/dry sandpaper, 400,800,1000, and 200 grit. One spray can of clear coat with UV protection,l one bottle of rubbing alcohol, and masking tape. Basically the process is to sand the lenses with sandpaper. First doing circles and then sanding sideways. We did this with all four types of sandpaper. Cleaning the lenses with rubbing alcohol and spraying the lens with a clear coat. It was a big improvement but not perfect. Perfect would be replacing both front plastic lens covers.This could cost 200-300 dollars. The cost of the total project was $20. I saved $280. That is a good vacation day.