Gesso is great for covering or repairing a background for art mediums. It dries permanent with a matte finish. Can be applied with a palette knife, texture tool or brush. It can be easily applied on any wooden, cloth, paper, leather, plastic etc. It works well with all sorts of colours, paints, sprays and crayons. The black gesso is specially used, where one needs to create dark or night backgrounds. Most widely used in mix media.