Mm11 polyurethane satin varnish is a very popular varnish used in folk art techniques. Always stir before use to ensure even distribution of the matting agent. This water based finishing varnish provides a clear, non yellowing and hard wearing finish for all hard surfaces painted with acrylic paints. A lovely satin varnish which is not too glossy but still has an alive look about it without being matt. Apply with a soft brush. Do not use mm11 satin varnish over oil based paints or oil based antiquing finishes. Do not add water. Do not use on paper, canvas or other flexible substrates. [space height="10"] water resistant, heat resistant, quick drying and flexible. For more details see the "Varnish" section. Safety data sheet (sds) to view or download a copy of mm11 sds, please click here (284kb) varnishing a varnish is a clear coat applied over the top of an artwork. It has two main functions to give an even sheen to the work, which will in turn help to bring out the full intensity and beauty of the pigments, and to protect it from several different areas of attack such as wear and tear and airborne grime and chemicals.