I could only fit one into the clip. Go to the source to see the rest. It's hard to say which one(s) were the worst. Thankfully these practices aren't done anymore (I hope).
7 Totally Unhealthy Beauty Practices
Dental care was a little lax throughout most of history, but Romans in the time of Jupiter appreciated white teeth nearly as much as we do today. To improve the color of their teeth and freshen their breath, Romans imported Portuguese urine (believed to be stronger than their own) to rinse their mouths. While obviously unpleasant, urine contains several compounds like ammonia and urea that actually kill germs and help fight the gum disease gingivitis.
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