I had NO idea that there was an invention to help wash makeup brushes until I received one of these with a makeup brush that I ordered!  NOW I wonder how I ever lived without it.  It absolutely cuts the times it takes to clean a brush (thoroughly and deeply) in half...or more!  I used to just wash them over and over and over until the water ran clean, but you can see that the round knobbies and straight lines across this item gets between the brush hairs and clean them in no time!  I am very impressed and very happy!  I highly recommend it!