Winsor & Newton Brush Cleaner & Restorer is for dried acrylic, oil, and alkyd paints. Non-toxic, biodegradable, nonflammable, non-abrasive, low-vapor product that safely and easily cleans both natural and synthetic brushes without damage to the brush head. Not recommended for use on painted or varnished surfaces; contact with brush handles should be avoided. Not for use with polycarbonate or other plastic surfaces. 16 ounce bottle.