Can't put hot water ≥ 70°, otherwise the bowl will broke.

Can't use if you order the handle or bowl only.

10 Seconds Electric Makeup Brush Cleaner Convenient Silicone Make up Brushes Washing Cleanser Cleaning Tool Machine 

It takes 2 AAA batteries in the handle of the cleaner. Batteries not included.How to work:

1. Fasten the brush to the attachments
2. Pour appropriate water and soap into the bowl.
3. Dip and dunk the brush in the liquid for 10s.
4. Turn on the spinner, spin the brush to clean.
5. With clear water and clean again.
6. Spin the brush to dry it.