What You Don't Know About Your Skin CAN Hurt You

Illustrated by Anna Sudit.
The skin may be our largest organ, but — whether we fall asleep before properly cleaning our faces or pick at a juicy pimple — we tend to take it for granted. With a plethora of skin-care dos and don’ts out there on the Internet, which rules are really worth paying attention to?
To satisfy our curiosity, we talked to Jeannette Graf, MD, clinical and research dermatologist and assistant clinical professor of dermatology at Mt. Sinai Medical Center in New York. She helped us bring a few little-known skin truths to the surface — because what you don’t know about your skin actually can hurt you.