Ancient Romans Used Urine as a Mouthwash

The ammonia in urine was an effective cleaning agent and whitener for teeth. It was a common practice, and there was even a tax on urine collection in some periods, highlighting its perceived value and widespread use in ancient hygiene.

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https://www.history.com/news/8-things-you-may-not-know-about-ancient-rome

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Published: March 26, 2026
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History Culture Weird Ancient Rome Urine Hygiene Weird History Roman Empire Medicine

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