Stevenson Matte Medium is made with the same 100% acrylic emulsion used in Stevenson acrylic paints. They can used to thin and extend acrylic colours. Acrylic mediums dry to a clear, flexible, insoluble, non-yellowing film. Matte Medium makes an excellent adhesives for collage and craft work. The addition of fumed silica to the matte medium imparts an even, matte finish.