Tri-Art Retarder Gel 250ml
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Tri-Art Retarder Gel is a thick gel format of Retarder and is formulated for use with Tri-Art's High Viscosity paints and mediums. Ideal for plein-air painting, mono printing and any other technique that requires paint to be wet for longer periods of time. For optimal results do not use more than 20% Retarder Gel with any quantity of paint.