Acne wash as tooth bleaching agent...

So, I have an acne wash which is 8% benzoyl peroxide. Can I just brush that onto my teeth for a few minutes each day to help bleach them?

This summer I've smoked more cigars that I previously had, and my teeth are showing it. Just trying to get them to look good before I head back to my university! haha

Benzoyl peroxide is often used to bleach teeth as well, but I'm not sure if the face-wash would have anything which could damage the teeth...Probably should have asked a few minutes ago, but I suppose this question will let know whether I should do it again tomorrow ;)

Thanks!
Acne wash as tooth bleaching agent...
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