Mission Models is a premium acrylic (water-based) paint system. Although ready for use as supplied, it is highly recommended that the paint be reduced (thinned) prior to airbrushing using MIOMMA-02 or MIOMMA-03. It can also be applied using a brush straight from the bottle. These paints are ideal for scale modelers, figure painters, and graphic artists. Airbrush Mixing Ratio: Matte Finish 10 drops paint 2-3 drops thinner 15-20 psi Satin Finish 10 drops paint 2-3 drops thinner 2-3 drops MIOMMA-001 Poly Additive 15-20 psi