Jo Sonja Retarder Medium 250ml
Retarder Medium is an additive to extend the â€˜openâ or drying time of Jo Sonja Matte Flow Acrylics or Mediums. It may be used as both a painting medium and for various techniques such as antiquing.
â€¢ To use Retarder as a painting medium, lightly moisten the brush with Retarder before picking up paint.
â€¢ To further extend working or â€˜openâ time, Retarder may also be applied directly to a prepared surface. A mop brush may be used to ensure an even application.
â€¢ Mix Retarder directly into palette colors beginning with a ratio of approximately 1 part Retarder to 3 parts of color to delay the drying time of the paint. Adjust ratio as required technique. The more Retarder that is added, the more transparent the color becomes.
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