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 Airbrush Transparent Extender).