Airbrush Medium modifies GOLDEN Fluid Acrylics for spray application by reducing clog­ging and tip buildup during spraying. Recommended for spraying on garments, Airbrush Medium may also be used to thin other prod­ucts for spraying  such as Iridescent/Interference Acrylics and Gesso. NOTE: Airbrush Medium is NOT designed to mix with High Flow Acrylics (Use High Flow Medium).

https://www.goldenpaints.com/technicalinfo/technicalinfo_abmedium