Makeup brush cleaner machines are devices that clean and dry makeup brushes automatically. They are available in different sizes and models, and they come with different features. Some of the positive aspects of these machines are that they are efficient, save time and effort, and can clean brushes of different sizes. However, some negative aspects are that they can be expensive, require batteries or electricity, and may not work well with certain types of brushes. The materials used to make these machines vary depending on the model and brand. Some popular materials include ABS, PC, and TPE. Some examples of makeup brush cleaner machines are the Electric Makeup Brush Cleaner Machine by Alyfini, the Electric Makeup Brush Cleaner and Dryer by RICRIS, and the Automatic Electric Makeup Brush Cleaner Machine by Search Find Order.