Jo Sonja Retarder Medium - 250ml

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Jo Sonja's Retarder Medium is an additive used to extend the "open" or drying time of Jo Sonja's Colours and Mediums. Acrylic paints dry rapidly in conditions of low humidity and/o r high temperature. Both air conditioning and winter heating reduce the levels of humidity in a room causing acrylic paints to dry faster. Show more