12 Common Beauty Questions, Answered
3. How often do I need to wash my makeup brushes?
Many experts agree that once a month is fine. "Dip the brush in warm, soapy water—use shampoo or a mild bar soap. Rinse it, blot the brush with a clean towel, then use a blow-dryer to dry the bristles gently," suggests Ellen Marmur, a dermatologist in New York City.