Do products like this work? If so, HOW do they work?

[Black Hole]

http://quixx-usa.com/

[Foxxx5oh]

i dont necessarily know if this product works, but a decent rubbing compound can get shallow (clear coat) scratches out of paint and a polishing compound can restore shine to the dull areas...the next cruise in we are at at the same time ill show ya how to take out small scratches like that video showed. :) its not too hard to do by hand, just time consuming depending on the severity of the scratch. do NOT use a high speed buffer to repair a scratch unless someone has showed you how, i let someone try to fix a scratch on my BMW and they ended up taking paint off in a couple areas...lol

[rally]

dry wash and guard (which i use and sell) works equally or better, in some cases, as well as using the rubbing compound and you don't have to wash the car. unless you've deen 4 wheel'n