For the finish to be really smooth you have to press hard when applying it.

If you sand too much you can sand more than just the clear coat off and it would result in a dull finish

Unable to use, since my car's finish is listed on the package as something you should use this product on.

Sandpaper dulled the finish even after using the other two tubes.

This product is a scam and will damage the finish of your vehicle

You really need to push HARD to get the scratches off the topcoat since it can be a really hard finish