GOLDEN Gloss Medium [formerly Polymer Medium (Gloss)] is useful for creating glazes, extending colors, enhancing gloss and translucency. It has an oil-like feel and resinous nature that promotes flow and leveling. It is the best product for blocking Support Induced Discoloration (SID). GOLDEN Mediums & Additives provide infinite control with acrylic colors. Mediums control transparency, viscosity and surface sheen, while additives control paint's working properties.