It works on both finished and natural woods, including wood floors.
Promising review: "Our paneling and cabinets were looking rough. We have two dogs that jumped up and scratched places, we also had an area that was damaged by water spots where our dog bowls were, and several other areas that were just worn from heavy traffic. This stuff was like a magic eraser for water spots, scratches, scuffs, and any other blemish. We simply wiped the product on with a paper towel and let is sit for 20 minutes before wiping it off with a clean towel. Everything looks brand new. I'm buying a couple more so we can finish our cabinets and wood paneling. We're so glad we found this product." —Kris
Get a bottle on Amazon for $8.48.
FYI, if you're facing much damage that's a little worse than that, you might want to try their other (also well-reviewed!) product, called Restore-A-Finish, first; it does more to hide minor scratches, white heat rings, deep water marks, and stuff like that. The two products are actually made to be used together! Get that on Amazon for $7.99.