Jo Sonja’s Gesso is a flexible acrylic ground with a high grit content which provides tooth on which to paint. It is not water-absorbent and does not suck the moisture out of your paint when you start to work on it. Available in black and white. Gesso may be used instead of or as well as All Purpose Sealer. Usually applied on very porous or uneven surfaces, the grit will have a slight levelling effect, which is beneficial for inferior surfaces or rough edges.