Does activated charcoal really whiten teeth?

astrOnaut01
I'm debating whether to buy some or not, but I can't tell if this is a cruel internet inside joke or something (So, I feel like I can't trust google).

Can any of you vouch for it's effectiveness at whitening teeth or am I being fucked with here? I don't understand how brushing your teeth with black residue can whiten your teeth. It seems contradictory, doesn't it?
I don't know/ Other answer
(Never tried it) - No, it doesn't whiten teeth
(Have tried it before) - No, it doesn't whiten teeth
(Never tried it) - Yes, it does whiten teeth
(Have tried it before) - Yes, it does whiten teeth
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Does activated charcoal really whiten teeth?
4 Opinion