Holbein Duo Quick Drying Gloss Medium has been specially formulated to be used with Holbein Duo Aqua Oils (water soluble oils). This medium enhances transparency and gloss finish while dramatically accelerating drying time.
When mixing with Duo colour in equal parts, substrate surface will become tacky in as little as 30 minutes. Do not exceed 50%. Can be thinned with water, but will reduce the overall effect and create a milky appearance from adding water will become clear once dry. Avoid applying in thick layers as this may cause wrinkling.