Holbein Duo Aqua Oil Quick Drying Medium Pastes were designed specifically for use with Duo Aqua Oil Colors. Use them to enhance transparency or translucency, create a gloss or matte finish, accelerate drying time, or aid brushability and flow. - Holbein Duo Aqua Oil Quick Drying Medium Paste - Matte, 50 ml tubeHolbein Duo Mediums, QUICK DRY MAT 50ML - This is an aqueous paste medium that results in a translucent, matte finish while dramatically accelerating drying time. The matte effect varies from color to color. When mixed with Duo Aqua Oil Colors in equal parts, the substrate surface becomes tacky in approximately 30 minutes. It can be thinned with water, reducing the matte effect; the resulting milky appearance becomes clear when dry. Thick layers may cause wrinkling.