Cleaning makeup brushes is one of those laundry list annoyances – king of like hand washing. Professional beauty artists who work on celebrities every day say that dirt and oil from the skin combined with liquid or powder in the brushes will cause skin irritation and breakouts, without regular cleaning.
You must regularly rinse every week. If you have sensitive skin, that process may need to happen every few days.
Tom Pecheux, a famous celebrity makeup artist, who worked with models like Kendall Jenner and Sara Sampaio, told Into The Gloss, “I like to use an organic soap to clean my brushes. I prefer in a bar, so that I can rub my brushes directly onto the bar of soap. I do this after each time I use my brushes. Once in a while, when I don’t have to work the following day, I wash with the bar soap and let my brushes chill over an air conditioner to soften them. If I’m in a rush, I will set them on top of a radiator, and if I really don’t have time, I will put a blow dryer to them. It is important to let them dry naturally and standing up so the shape is restored. For synthetic brushes, like lip and concealer brushes, I use hand sanitizer on them after each use.”