Acrylic paints are great for airbrushing because they're water-soluble and can be thinned with water.
US Art Supply airbrush water-based acrylic paint thinning reducer and extender base, 16-ounce pint bottle. It works excellent for thinning Acrylic
US Art Supply 16-Ounce Pint Airbrush Thinner for Reducing Airbrush Paint for All Acrylic Paints - Extender Base, Reducer to Thin Colors Improve Flow
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