Removes eight or more coats of oil and latex paint, varnish, lacquer, enamel, shellac, urethane, polyurethane, water-bourne finish and epoxy. Non-flammable. Semi-paste makes it easy to use on horizontal or vertical surfaces. Removes most clear finishes in5 to 10 minutes, most painted finishes in 15 to 30 minutes. Wash off old finish with water and a scrub brush or scrape it off with a putty knife.