Stibium

"Why is antimony called Stibium?
Word origin: Antimony was named after the Greek words anti and monos to mean “a metal not found alone.” The chemical symbol, Sb, comes from the element's historical name, stibium." - LiveScience article Facts About Antimony https://www.livescience.com/37390-antimony.html

(I really liked the "not found alone" bit.)

"Antimony was favored by the ancient Egyptians as a kohl, and the Greeks also used it as a cosmetic to blacken eyebrows and lashes. ... But antimony is still shown to carry many risks for those exposed to it, including disruptions to the skin and digestive tract, chronic breathing issues, and other ill health effects." - Bustle.com article The Deadliest Products Marketed to Women from History https://www.bustle.com/p/the-deadliest-products-marketed-to-women-from-history-56901