Atelier Retarder Medium is particularly useful when painting wet-over-wet or wet over-dry techniques. Makes blending with acrylic colours easier. May be added to other Atelier Mediums to increase their working time. When large amounts are used, acrylic colours may be reactivated when overpainted. After a few days the Retarder Medium itself evaporates leaving the performance of the dry paint film unchanged. Clean up with mild soap and cool water. Water-based and non-toxic.
