What is airbrush makeup, and should you try it for your next big event or your wedding day? Here are all the details on what it is and how to use it. Air brush systems for makeup are designs that are smaller diaphragm compressors with less powerful and affordable. They have a have two needles that rest in the nozzle which the user maneuvers. The action happens when air and the pigments meet. One needle pushes out air and the other pigment. A single action nozzle is when the user just sprays out the mixture and a double action is where the user can control the amount of pigment that is released. This allows him great control over the results he/ she wants at the end.