About 25 years ago I had a problem with tiny scratches on the face shield of my motorcycle helmet. Riding at night became dangerous because of the "headlight flare" of oncoming cars. New shields were more expensive than I wanted to deal with on a regular basis.

A friend told me about Meguiar's plastic cleaner and plastic polish. They were sort of expensive, at the time, but if they worked, they'd be well worth the money. I was astounded at the results: my face shield was 100% like new with no scratches at all. I've been using the cleaner and polish since.

A couple of years ago, I needed to use a CD to reinstall Windows XP. It was so scratched that I couldn't use it. The installation had already skipped 36 files before I quit trying. I didn't want to purchase another copy of XP and I happened to remember the Meguiar's plastic products. I had nothing to lose so I tried them on the XP CD.

They worked so well, I was able to reinstall Windows XP without a single file skipped. Since then, every time we rent a DVD movie that is so badly damaged it skips and/or stops, I pull out the Meguiar's plastic cleaner and plastic polish.

I see that Meguiar's has a newer product named PlastX. I haven't tried it yet, but I will as soon as I run out of my current supply of the old stuff. And no, I have no connection with Meguiar's; I have just thoroughly enjoyed the results of every one of their products I've used.