Jo Sonja's Retarder Medium 250ml Size:250ml the bag stays fully open

the bag stays fully open when set down

assembling required

Derivan Brush Restorer contains natural solvents and vegetable-derived detergents which are not hazardous to humans

18 Paint wells

Spray apply using the Atelier Fine Mist Water Sprayer

Jo Sonja's Retarder Medium 250ml Size:250ml the bag stays fully openAll Jo Sonja Mediums Jo Sonja Iridescent 60ml Jo Sonja Acrylic 75ml Jo Sonja Acrylic 250ml Jo Sonja Acrylic 1Liter Jo Sonja Acrylic Sets 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 or high temperature. Both air conditioning and winter heating reduce the levels of humidity in a room causing acrylic paints to dry faster.