Fluid Iridescent Medium by Liquitex. Produces a range of iridescent or metallic colors when mixed into acrylic colors or other Liquitex mediums. Opaque when wet, transparent to translucent when dry. Product can be thinned by adding 30% water. Will not oxidize. DO NOT mix with oils. Works best with other transparent or translucent colors. Large quantities may lighten colors until dry. 8 fl. oz.