I'd suggest keeping the toothpaste on your teeth lol. I have used the 3M kit on my old hatchback and it works wonders! It's possible to do it with hand, but to get the best results, use a drill. I bought it for like $15 at Autozone, but I was there the other day and they were selling it for $20 now, go figure. Either way, it's definitely worth buying.I was just looking into this too and a couple people were talking about the 3M kit. Do you use it by hand or with a drill? I heard that there may be a drill attachment in the kit. I also heard about people using toothpaste and some light grit sand paper... seriously.