How often do you wash your makeup brushes?
Not as often as I should (or at least that’s the short answer). I have a sizeable collection of personal use makeup brushes, and I probably wash them thoroughly about once a month. HOWEVER, I spot clean my brushes after every use which keeps them clean and sterile. My spot cleaner of choice is the Napoleon Perdis Brush Cleaner. It’s ridiculously expensive, but nothing else I have tried even comes close to being as effective.