Airbrushing is the ultimate in professional makeup ~ it is simply a tool, like a brush or sponge, used to apply foundation.  The beauty of airbrush is that it sprays micronized pigment onto the skin in itty bitty pixels that are invisible to the naked eye and “float” on the surface of the skin . . . this results in flawless coverage with less product, so it looks and feels natural.  Airbrush makeup is commonly used in TV and film because it is undetectable even with Hi-Def cameras.