Teeth brush-on whitening?

I have been trying to find a way to remove cigarette / coffee / wine stains from my teeth. The strips won't work well, since I have crocked teeth :) and most of the stains are on the inner side. I once read about some brush-on whitener but I am not sure what it was. It was that you just brush it on like toothpaste but don't rinse and keep it overnight. Anyone knows what I am talking about? Let me know please. Thank you all
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I have never heard of brush- on whitening but I do know of toothpastes that will help you remove stains. Arm and Hammer whitening toothpaste works AMAZING! I personally used this and my teeth went three shades lighter after one week. When I ran out of toothpaste though, the whiteness faded away :/
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