Slow Dri Gel Retarder Thick additive that slows drying Effects Painting AdditiveTexture: ThickSheen: SatinRelative Opacity: Transparent For all acrylic paints and acrylic mediums Similar to Liquitex Slow-Dri Fluid Retarder, except in gel (Heavy Body) thick consistency. Designed to be used with Liquitex Heavy Body Artist Color and Heavy Body mediums. May also be used with Liquitex Soft Body Artist Color and Soft Body mediums, however thickness of acrylic paints or mediums will be increased. Archival Increases blending time Directions Do not mix more than 25% per volume into paint and mediums or paint may not fully dry, have poor adhesion and excessive shrinking. Application Liquitex Paint Additives are similar to acrylic mediums in that they are mixed into acrylic paint and mediums to change consistency, thickness, transparency, sheen, drying time and absorption rate. However, they are different in that they do not contain acrylic polymer emulsion and therefore have no binding qualities inherent in them. Only limited quantities (usually up to 25%) of any additive can be added into the color before harming the paint film.