Universal product that works with any acrylic (water-based) model paint and extends its open time by 100%! With Slow-Mo drying retarder you will be able to exercise numerous weathering techniques such as glazing, blending or filtering and many more! Contrary to troublesome gel retarders Slow-Mo increases flow and can be used as typical paint thinner – mixes with paint more very easily. Typical usage is between 10 and 30%.