Maimeri Acrylic Polymer Mediums ae a milky fluid is a colorless medium that will improve film resistance, visocity, and increases transparency. It can be used as a final, permanent finish. - Maimeri Acrylic Polymer Medium - Gloss, 250 ml jarMaimeri Acrylic Medium, GLS MED ACRYLC 250ML - Maimeri Acrylic Gloss Medium is a milky fluid that increases the brightness of acrylic colors, improving their film resistance. It may also be used as a finish, for application when the paint is dry.