US Art Supply 16-Ounce Pint Airbrush Thinner for Reducing Airbrush Paint for all Acyrlic Paints U.S. Art Supply water based acrylic paint thinning reducer and extender base Designed to make the airbrush colors thinner, increase color transparency and improve the color flow with smaller tipped airbrushes Contains acrylic based binders to ensure that you do not lose any paint quality when reducing it further for any desired effect. We recommend thinning with airbrush reducer & extender base when doing fine-line detailed work with a small tipped airbrush Our vibrant acrylic airbrush colors are designed for permanent results on most mixed-media & textile surfaces