Airbrush retardant with Schmincke pipette 28ml Retardant for airbrushing. Slows down the paint drying process. Helps reduce possible residue that accumulates on the tip of the airbrush needle and nozzle. Mix with a maximum ratio of 1:1. Dilutable with water. Do not use undiluted. Use at a room temperature between 15 and 30 °C. Quantity: 28 ml. Brand: Schmincke.