This bottle of Crest Pro-Health says that it gives you 24-hour protection. Then it says that you should use it twice a day. So one swish protects you for a whole day, but just to be sure, you should swish twice. (Thanks to aweirdguy!) [More]
This bottle of Crest Pro-Health says that it gives you 24-hour protection. Then it says that you should use it twice a day. So one swish protects you for a whole day, but just to be sure, you should swish twice. (Thanks to aweirdguy!) [More]
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