When working with this material, it’s important to clean your PU brush after each use. Otherwise, the bristles can become clogged and the brush itself can become misshapen. Fortunately, cleaning a PU brush is relatively simple. In most cases, all you need is some soap and water.
https://cleanerprofy.com/how-to-clea...rethane-brush/ You should, however, be aware of a few things.