Sennelier Abstract Acrylic Binding Medium is a gel with a satin finish that is translucent, flexible, indelible and waterproof. It is used for mixing pigments, gluing or as a transparent undercoat.   Creates a satin to glossy finish depending on the percentage of acrylic resin used.  Water soluble and irreversible once dry. When mixed with pigment, the water-resistance of the paint is greater once dry. It is possible to add glycerine to slow down the drying process.  Packaged in the same innovative pouch as the Sennelier Abstract Acrylic paints, these mediums can be easily resealed meaning they won't dry out and there will be no waste. Can be fitted with different paint tips to achieve different effects straight from the tube.