GOLDEN Soft Gel Medium, Matte, 8 oz. jar. Soft gels are moderately pourable, hold only slight peaks, and are ideal for glazing and other techniques that require transparency and can be used as an adhesive; ideal to adhere paper and material for collages. GOLDEN mediums and additives provide infinite control with acrylic colors. Mediums control transparency, viscosity and surface sheen, while additives control paint’s working properties.