Krud Kutter 32 oz. Brush Wash and Renewer is a biodegradable, water-based formula that allows safe, fast and effective removal of coatings from applicators. Formulated to work with a variety of products including oil paint, latex paint, varnish, lacquer, shellac and polyurethane. Specially formulated to clean and renew synthetic brushes, rollers and other paint applicators. Not for use on natural bristle brushes.