Black Gesso can be thought of as the bridge between your support (canvas, board or whatever you paint on) and the paint. Gesso is designed to penetrate supports and provide a surface to which paint can adhere, formulated to be flexible, and is highly pigmented for greater opacity. Proper preparation with Gesso increases the life span of artwork.
For painting, we recommended that at least three layers of gesso are applied. Gesso can be mixed with acrylic colours to produce a range of coloured grounds.