Thanks to ingenious Ultra Air,  can be used in any airbrush without sacrificing its natural looking, flawless finish! This innovative silicone product does triple duty as an airbrush thinner, cleaner and mixing medium. Ultra Air’s sophisticated formula includes a drying accelerator and allows for immediate touch-ups without marring the finish or leaving fingerprints while enhancing long-term wearability. The colorless, oil-free formula won’t affect the shade of the product thinned and can be used to change opacity as desired. Heat, moisture and sebum resistant.