• 3703 - 8 oz Jo Sonja Retarder Medium_1080x1920 bottle

Jo Sonja Retarder Medium

  • Jo Sonja Retarder Medium

    Chroma’s Jo Sonja Retarder Medium is used to extend the “open” or drying time of paint for special techniques such as antiquing or in hot, dry conditions. Recommended for use in brushes for storage.

  • Characteristics
    Use to extend the open time of paint and mediums
    Great for antiquing
    AP-approved non-toxic
    Clean up with soap and water
    Use a hair dryer to speed surface drying
    Available in 250ml bottles
    Approx. coverage: 1 oz = 8 sq ft
  • Techniques
    To use Retarder as a painting medium, lightly moisten the brush with Retarder before picking up paint.
    To further extend working or ‘open’ time, Retarder may also be applied directly to a prepared surface. A mop brush may be used to ensure an even application.
    Mix Retarder directly into palette colours beginning with a ratio of approximately 1 part Retarder to 3 parts of colour to delay the drying time of the paint. Adjust ratio as required technique. The more Retarder that is added, the more transparent the colour becomes.
    A barrier coat of Clear Glaze Medium is recommended before antiquing, then thin paint with Retarder using a ratio determined by the strength of colour desired. Begin with 1 part paint to 1 part Retarder.
    Apply over painted surfaces and then wipe off to produce an aged effect. For additional open time, apply a light coat of Retarder directly to the surface. Use a small amount of Retarder on cloth to remove excess.
    Allow 48 hours drying time before varnishing. An extended dry and cure time should be allowed and varies due to humidity and climatic conditions or if an excessive amount of Retarder has been used. A hair dryer may be used to speed surface drying.
    A coat of Clear Glaze Medium is recommended prior to application of varnish.

Jo Sonja’s Artists’ Colours Tutorials

Welcome to Chroma Online!

Please select the country you want to visit.