Liquitex Fluids Acrylic Mediums can be used as an extender and fixative for Liquitex Acrylic Paints, giving increased flow without affecting paint stability. Matte Medium can be used to maintain opacity and extend opaque colors to double amounts without changing the color. Matte Medium is ideal for large projects where transparency is not desired. - Liquitex Fluids Acrylic Medium - Gloss, 16 oz bottleLiquitex Acrylic Medium, GLOSS MED PNT -