Do I Really Need to Wash My Face Before Bed? Not no.
By Julie Schott
"What happens when you make a habit of sleeping in makeup? "There's very little data on this," says Josh Zeichner, MD, director of cosmetic and clinical research in dermatology at Mt. Sinai Hospital. "Anecdotally, we see patients who have more skin irritation and more acne breakouts if they don't take their makeup off. Some makeup is labeled as long-wear that you can wear for 24 hours. But should you? Probably not." So it's fine at first, but ultimately, sleeping in makeup isn't sustainable. "Eventually, your youth can no longer out-match the toxicity of the damage from makeup left on overnight," says dermatologist Macrene Renee Alexiades-Armenakas, MD, PhD. "When you sleep with makeup clogging the pores, the bacteria proliferate overnight. Pollutants and other bacteria adhere to the makeup and further add stress and damage to the skin. Leaving makeup on overnight can exacerbate breakouts and worsen the skin aging process.""