Keep artwork dust free and protected over time! This picture cleaner is designed for cleaning varnished paintings. It works by dissolving linseed oil oxidation, removing surface dirt as well. When you are finished cleaning, simply remove any remaining cleaner with distilled turpentine. Unvarnished paintings may also be treated with Artists’ Picture Cleaner but great care is necessary and the process should be stopped immediately if any color appears to be coming off the painting.