teeth whitening.

So, I decided to start brushing my teeth with this gel that you're supposed to put into this little blue tooth-mold thing (that I decided I'd rather play with than actually use), and I'm starting to wonder if it's going to make much of a difference? It's basically the same thing, right? I think it might even work better than the blue thing. I'm trying it out for one week - the whole, brushing with the gel thing, hopefully it won't bleach my gums?