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 - Gloss, 110 ml tubeHolbein Duo Mediums, QUICK DRY PASTE 110M - This is an aqueous paste medium that results in a transparent and gloss finish while dramatically accelerating drying time. When mixing 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 gloss effect; the resulting milky appearance becomes clear when dry. Thick layers may cause wrinkling.