I'll admit that I can get very lazy with caring for my makeup brushes, but I know that cleaning them is s0 important because doing so helps to keep your complexion clear. I learned from reading an article in Allure magazine that cleaning your makeup brushes with liquid dishwasher detergent keeps them clean and is damage free. What I like so much about using liquid dishwasher detergent on my brushes is that it eliminates oil/grease wonderfully. What I do is squirt a small amount of detergent into a small dish, swirl each of my brushes around in it, then gently massage the brushes under warm water until the water runs clear and then lay them to dry on a paper towel. I've used liquid dishwasher detergent on my brushes 3 times now and my brushes (and face) are still in good condition. In between washes (about once a week), I use Sephora's Daily Brush Cleaner; love this stuff. All you have to do is spray it directly onto your brushes and gently wipe onto a tissue to eliminate excess makeup before applying your makeup for the day. This helps to keep your brushes bacteria free every day.
I hope this helped some of you who are looking into a new formula for washing your brushes!