Give your paint an iridescent finish, or use on its own to add surface highlights Liquitex Iridescent Pouring Medium gives a smooth iridescent appearance. It increases paint transparency and extends your colour without affecting acrylic stability. It slows drying time to help you create more subtle colour blends and lowers the viscosity of heavier body paints. Maintains paint adhesion, durability and archival quality. Suitable for iridescent effects and highlights. Use with acrylic paints and mediums on all acrylic-friendly surfaces. Contains 473 ml.