Overall, the Ultrasonic Cleaner in Slate Gray color by Ultrasonic Cleaner seems to be a reliable and effective tool for cleaning makeup brushes. The ultrasonic cleaning technology ensures a thorough and efficient cleaning process. Kimberly's brushes came out looking fresh and clean after just two cycles. The Soak machine is easy to set up and use, making it a convenient option for anyone looking to keep their brushes in top condition.