DANGER OF NOT CLEANING YOUR MAKE-UP BRUSHES

Unless you won the school science fair, you probably don't realize what can happen when good brushes go bad: Makeup and skin oils build up, creating a breeding ground for bacteria that can cause irritation. "In an ideal world, you would clean your brushes once a week, but most of us don't," says Fusco. Instead, wash your tools monthly with a liquid hand soap or baby shampoo and lukewarm water (hot water can cause bristles to fall out), then rinse well, squeeze out the excess water, reshape, and allow the brushes to dry thoroughly by balancing them over the sink. Weekly, spritz them with antibacterial Colorescience Pro Brush Cleaner or Sephora Professionnel Daily Brush Cleaner Anti-Bacterial Formula, and dry with a tissue.