These are the ancient Egyptian hieroglyphs that are thought to refer to acne. They're part of a nifty piece by Hilda Bastian that looks at the history of our understanding about zits — where people thought they came from before we knew about their relationship to hormones and bacteria. And how some of the myths that originated in that pre-scientific understanding still affect our cultural attitudes about acne and the way anti-acne products are marketed to us today.
Maggie Koerth-Baker is the science editor at BoingBoing.net. She writes a monthly column for The New York Times Magazine and is the author of Before the Lights Go Out, a book about electricity, infrastructure, and the future of energy. You can find Maggie on Twitter and Facebook.