Makeup brushes are every beauty junkie’s secret weapon. But ask them when was the last time they washed their brushes, and the answer is likely longer than it should be (I am guilty of this too), so consider this your personal reminder to wash those brushes sitting on your vanity. Below, I am sharing five rules of thumb to follow when caring for your makeup brushes… Wash Once a Week How often should you wash your brushes? While it varies depending on how often you use your brushes, I recommend washing them once a week. Your brushes are home to bacteria which can result in unwanted breakouts on your face.…