For dried acrylic, oil, and alkyd color, this is a nontoxic, biodegradable, nonflammable, non-abrasive, low vapor product that safely and easily cleans both natural and synthetic brushes without damage to the brush head. It is not recommended for use on painted or varnished surfaces; contact with brush handles should be avoided. Details:Available in assorted sizesNontoxic and low vaporNot for use with polycarbonate or other plastic surfaces