VMS Slow-Mo Retarder for brush acrylic

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%. Can be used as airbrush extender (to prevent tip drying). Please click the bottle photo for details.

Combine with: Any acrylic model paint

Recommended techniques: Brush

Available volumes: 30 ml dropper bottle

Acrylics normally dry very quickly but with a good retarder you can use them more freely. It's a compromise between the speed of acrylics and flexibility of oils. 

Green "Acryl" icon denotes a product suited to work with water-based acrylic paints. They come in plastic dropper bottles and glass jars. This product is compatible with acrylics by Vallejo®, Humbrol®, Tamiya®, Revell®, Model Master®, Italeri® Gunze® (only H series), Pactra® and equivalents. Not suited for solvent-based acrylics (Gunze® C series) and enamels!

Product FAQ

How much will the open time be altered by the retarder?

Usual increase in open time is 50-100% depending on the percentage of retarder added to the paint.

How much retarder can I add to the paint?

You can add between 10-30% of retarder which will also improve flow of your paint and reduce brush marks. Use maximum 1 drop of retarder per 2 drops of paint (30%).

 Paint is drying too slow I want to paint another layer!

Use hair drier to speed up the process. Just remember to keep up a distance of 20-30 cm and use low setting. 

 Is the retarder compatible with my paint?

Slow-Mo retarders can be used with any leading brand of water-based acrylic paint. All that matters is that it's a water-based paint type. The product is compatible with acrylics by Vallejo®, Humbrol®, Tamiya®, Revell®, Model Master®, Italeri® Gunze® (only H series), Pactra® and equivalents. Not suited for solvent-based acrylics (Gunze® C series)!

​Can I use this product as an airbrush extender so as to mitigate tip drying?

Yes, you can add some retarder along your usual paint thinner to slow drying time and make airbrushing more comfortable but Slow-Mo Retarders were formulated with painting with a brush in mind (brush icon on the label). For best results please use our newly formulated, airbrush-dedicated Slow-Mo Extender which is a concentrated product with twice the potency (airbrush icon on the label).