Why Did Ancient Romans Use Urine as a Mouthwash?

💡 The Answer

• The Romans collected urine from public urinals and used it as a mouth rinse due to its ammonia content.
• Ammonia acts as a natural cleaning agent, helping to whiten teeth and kill harmful oral bacteria.
• This practice was so common that Emperor Nero imposed a tax on the collection of urine from public latrines.
• The use of urine as mouthwash reflects the resourcefulness and unusual hygiene practices of ancient Roman society.