This is a final picture varnish for use when a painting is fully dry (6-12mnths for thinly painted oils). It will create a permanent protective coating with matt finish. Michael Harding oil paint mediums have been developed to enhance and facilitate the effects of known oil paint techniques. Throughout history painters have always manipulated paint in search of the perfect paint film and finish. Michael Harding Oil Mediums are fully compatible with Michael Harding oil paints and can guarantee long-term stability.