I used the 3M kit and cleared up the lens but the fish eye lens inside is foggy on one side. How do I clean the internal lens up?

 

I've found the best LONG TERM results are using a body compound like you would if you were wet sanding a car. Then buffing with plastic filler. Lastly waxing over it with a sealant/clear coat repair, sounds weird but I'm about a year in and no issues. Looks like glass still.

 

If you go the toothpaste route, don't forget to floss!!

 

Yeah - toothpaste can work. Used to use it on chrome. It depends on how bad the haze is. I used it on my headlights... better but not perfect - toothbrush with toothpaste - maybe if I spent more time... or get that buffing attachment for my drill...

 

Here is my results with the 3M kit. My lenses were bad! They look better than the picture shows, too! I had very poor lighting for the pictures.

Before:


After:

 

After wet (water and mild dish soap) sanding very lightly with 1000 grit sand paper, clean thoughly, use Krylon Fusion for Plastic top coating, non yellowing, UV protection. Use very light coats several times, assuring it is dryed between coats. The initial coat will show slight "orange peeling" don't fret it blends out as you progress.

This is a permanent solution. I have never had to repeat it, but hey, if I do, pretty inexpensive for around $8 U.S., and I've done 3-4 cars per can.

 

Photos of my mother's Bonneville. Before and after.

 

My old Kia failed the MOT because of cloudy headlights - took it to a local garage and they ground and polished the set of lens for £30 and it took about 20 minutes

Probably cheaper to do it yourself with a kit but I'm lazy

 

Another before and after fix, using my permanent resolution.



Before



After

 

Before



After