Why Ancient Romans Used Urine as Mouthwash Explained

Ancient Romans believed urine could help clean their teeth. This may sound shocking today, but fresh and aged urine contains ammonia. Ammonia is a natural cleaning substance that can remove stains.

Romans did not know the chemistry behind it. They simply noticed that it seemed to make teeth look cleaner and brighter. Because of this, urine was even collected and traded in some parts of the Roman Empire.

An interesting fact is that urine was also used to wash clothes. The same cleaning power that worked on fabric was believed to help with dental care.

Today, we know that using urine as mouthwash is not safe or necessary. Modern toothpaste and mouthwash clean teeth much better and are tested for safety. This unusual Roman habit reminds us how much science and health care have improved over time.

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