Winsor & Newton Conserv-art Matte Varnish is a high performance varnish for oil, alkyd and acrylic painting. It's advanced formulation provides enhanced application, flow and drying properties as well as excellent optical qualities after drying, allowing your paintings’ true colors to be seen. Winsor & Newton Conserv-art Varnishes may be blended to achieve a custom finish. They are removable for up to 100 years after application.