Liquitex Airbrush Effects Painting Medium is formulated to thin acrylic colours for airbrush application. Mixing colours with airbrush medium will ensure that the colours do not lose their flexibility, durability and adhesion. This low viscosity, ready to use medium is pre-filtered and pre-reduced to the required consistency for airbrush techniques - add as much or as little as desired. Formulated for maximum flexibility and adhesion, will not chip or crack on canvas. Can be applied to any material or surface that will accept traditional acrylic media, such as canvas, paper, wood, etc. Liquitex Texture Gels are lightweight, non-toxic and dry to a water-resistant, non-yellowing surface. Application: Mix Liquitex Airbrush Medium into soft body artist colour. There is no need to strain. Mix Liquitex Airbrush Medium into heavy body artist colour and strain to remove any undissolved colour. Start by mixing 50 per cent Liquitex Airbrush Medium to colour and mix thoroughly. Add further Airbrush Medium as necessary to facilitate flow through the airbrush. Each colour may require a different percentage of Airbrush Medium to colour, due to variation in colour pigment size and concentration of pigment. Airbrush nozzle size and spraying pressure (PSI) will determine the ratio of Airbrush Medium to paint mixture. Larger nozzles allow for high amounts of paint in the mixture. Keep airbrush wet during use, do not allow paint to dry in airbrush. Clean airbrush with water water/ammonia mixture, Liquitex professional acrylic ink pen cleaner, airbrush cleaner or alcohol. - Formulated to thin acrylic colours for airbrush application - Lightweight, non-toxic and dries to a water-resistant, non-yellowing surface - 237 ml bottle of medium - Intermixable with Liquitex professional acrylic paint colours and mediums - Conforms to ASTM D4236; safe for educational use