Specific excerpt: "Q: How often should I clean my makeup brushes? With what?
A: I always wipe my brushes off on a clean cloth between colors, or when I’m done applying makeup for the day. To deep clean, I wash my brushes every week or so using a mild, clear shampoo. Fill a cup with warm water and a pea-sized amount of shampoo, put your brushes in head-down and swirl around. Let soak for 30 minutes or so. Then take each one out and swirl around in your hand individually with warm water and a dab more shampoo. Rinse with *bristles pointing down* until the water runs clear. Squeeze gently and lay on a towel to dry overnight. Ta-da… clean brushes!"