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crest
Why can't I sleep with crest white strips in?
Whats the worst that could happen? (Swallowing it? Well what if I don't swallow it...)
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I used em, they are for when your awake of course. Trust me, they are hard enough to keep on while you are awake, so if your sleeping you would definately knock them off, swallow them, etc.
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They do make Crest night strips that you can use while you sleep. The ingredients that whiten your teeth are slowly released.
That being said I would guess the reason you can't leave the white strips on overnight is because it isn't slow release. The only things I could find
said they could cause GI problems. So I guess that is the main reason. Its probably not something you want floating around your mouth all night. :)
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