Add a rough texture to your work with Amsterdam's fine pumice medium. This pumice has a gray tint and can be used alone directly from the jar, painted, or mixed with paint. Since the pumice medium is colored, mixing it with paint affects the color. The Amsterdam pumice medium is available in fine, medium, and coarse structures. The fine pumice medium is often used to create backgrounds on which you can work with pastels. The granular texture greatly increases the color deposit. Pumice mediums are even used in model construction to recreate certain textures (like concrete, stone, and gravel). * Can be used pure or mixed with acrylic paint. * Can be covered with acrylic paint. * Can be applied in thick layers. * Water-resistant after drying. * Clean tools with water. * Use at a temperature above 10 °C and store protected from frost