Cleans synthetic bristle brushes, artist brushes, roller covers, trays and equipment after a project Removes hardened latex and oil-based paint, enamel, varnish, shellac, lacquer and polyurethane to leave tools looking good and working great Suspend brush in a metal can and fill with brush cleaner until bristles are covered up to the metal base of the bristles Soak brush for several hours or overnight, until the paint is softened Occasionally agitate brush to speed the softening process and keep the container covered with aluminum foil to retard evaporation