Review (1/5): Hand washing worked better.
This did not clean my brushes. The battery compartment cover will not stay on the unit. I held the batteries in while I proceeded to clean my brush. After at least three rounds for each brush, they all still had makeup stains. I used a mix of Dawn and Dr. Bronner's Tea Tree liquid soap.
After a few tries, I used the same cleaners and my hands. All of the makeup vanished.
TWO star because it dried the brushes after I hand washed them. MINUS one because of the battery cover.
*It may have ruined my fan brush, but I had a feeling that would happen.