Vallejo Masking Fluid (28850) in an 85ml. jar is used to protect parts that must remain unpainted, especially useful during airbrushing.
Masking Fluid forms a protective film where the painter does not want to paint. As soon as the work is dry, the Masking Fluid is rubbed off with an eraser or cotton swab and then shows the underlying paintwork.
TIP! Apply a minimum of 2 or 3 layers of masking fluid, making the mask stronger and easier to remove.