I’ve began using bentonite clay to brush my teeth. So far so good.
I use it for a mud mask as well because it clings to the impurities in your pores and pulls them out.
The clay is supposed to latch onto toxins before they enter the blood stream, so for the sake of experiment I’m going to consume a bunch of champagne some time in the next couple weekends and chase it with some bentonite clay at the end of the night and see if it has any impact on avoiding hangovers by latching onto the acetaldehyde precursors.