How often do I need to clean my brushes?

Professional Makeup Artists clean their brushes after every use. If you are the only user of your brushes, you may get away with cleaning them every few days or when it is necessary to switch from one colour to another or one product formula to another. You should at least cleanse and sanitize your cosmetic brushes once a week. Consider often do you cleanse your own hair, and consider that when deciding how frequently to clean your brushes.