Review (1/5): I had high hopes, but this just didn't work ...
I had high hopes, but this just didn't work. The brush spin slows down dramatically when you put it in the water. The instructions say to spin for 5 or 10 seconds in the water/cleaner. Even after doing so for nearly 2 minutes, my foundation brush was still full of makeup inside. AAA batteries are just not strong enough to spin the brush fast enough in the water to get the job done.