Renews And Restores Used and Hardened Brushes Removes Shellac, Solvent and Water-Based Paints and Varnishes More effective than traditional mineral cleaners such as white spirit No overnight soaking required Removes Zinnser B-I-N and most types of dried on paint from brushes with ease This product contains powerful detergents that break down paint for an ultra clean finish No Overnight soaking is required, Simply soak brushes in a suitable container for up to 4 hours