Stupid Fact of the Day: Roman Toothpaste Is Gross

Romans used to make toothpaste from urine - Ancient Romans used to use both human and animal urine as mouthwash in order to whiten their teeth.

Source: https://edmontonjournal.com/wellness/wtf-how-urine-improved-hygiene-and-oral-health-in-ancient-rome#:~:text=Article%20content-,Ancient%20Romans%20used%20to%20use%20both%20human%20and%20animal%20urine,acting%20as%20a%20cleansing%20agent.