Liquitex Ultra-Matte Gel, 8 Oz, Pack Of 2

Easy way to economically extend volume of acrylic paints Add up to 50% by volume to double the amount of paint without changing color position. Acts as a very weak tinting white if more than 50% is added. Maintains the opacity of color better than a clear gel medium. Dries to a semi-matte surface sheen to give colors a matte sheen and gouache look.