Headlight restoration is a huge deal these days. After cars switched to plastic headlight lenses we had to find ways to fix them when the UV coatings degrade and the plastic itself starts to break down. The plastic yellows or becomes hazy, reducing the light output and making the car look much worse. Now it seems like everyone makes a kit to fix them. Since I had 6 trashed headlights in the shop that needed fixed, I decided to buy every kit I could at O'Reillys and put them to the test.