Tooth Studding
Tooth-studding later adapted into temporary tooth studs, also known as "grills." But, the original tooth studs were actually drilled and implanted into perfectly good teeth. Sometimes they would fall out and expose the nerve that runs down the middle of your tooth—how fun!
Color Changing Eyebrows
Stylists largely advise against dying one's eyebrows due to the potential harm of getting those harsh chemicals so close to one's eyes. But, in ancient China, women would cover their eyebrows with blue and green colored grease. A lot of the time, this liquid was actually flammable, and it would irritate the lady's eyes.