I just wanted to know; when I put 2 listerine whitening strips on my teeth (1 for top teeth 1 for bottom teeth), am I supposed to swallow what melts? Because when I leave it there, the wetness of my mouth usually makes it melt and then I'm basically forced to swallow it. Or am I supposed to like keep my mouth dry?
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Well I would just try to keep my mouth as dry as possible before putting them on since your spit is what wears the strips down after a while, which is why you take them off since they don't work anymore. But it should be fine to swallow a little.
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