As you can see in my before and after, my teeth are NOT whiter. And I powered through TEN of these strips, in addition to using my usual OCD dental routine.
Black activated charcoal is all the rage right now, but really, it's not going to be this magical teeth whitening agent, removing all of "teh toxinz" from your enamel or whatever pseudo-science they are basing this on.
You want to know what's natural? YELLOW TEETH. Cavities. Decay. Crookedness. Crowding. Gaps. THOSE are all "natural". Having blinding optic white teeth that glow in the dark and might transmit small amounts of radiation? Not natural. So if you want UNNATURALLY WHITE teeth, you are going to have to resort to unnatural methods. Like visiting your dentist.