Makeup brushes should be cleaned at least twice per month, not only to remove old makeup, but oil, dirt, and dead skin as well. Eyeliner brushes should be cleaned even more frequently to prevent eye infection. Washing makeup brushes by hands are messy and time-consuming, but using soiled brushes is simply not an option. With the SPANKING Beautieg, removing makeup residue from your brushes is quick, clean, and efficient. A Beautieg a day keeps makeup grime away! Material: High quality, durable silicone Dimension: 2.5 * 1.2 * 2.9 inches (L * W * H) Length of the opening: 2.0 inches / 5cm Weight: 0.1lb. / 46g for each