Im doing a science project on "Does mouthwash whiten your teeth?" what do you think? If so which mouthwash does whiten the most?
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what mouthwash does is kill the bacteria living in your teeth (it may make your teeth a little whiter) since it kills the bacteria, it prevents diseases such as gingivitus. since gingivitus can make your teeth yellow, then YES, mouthwash does help whiten your teeth
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