This Grey Gesso is one of the crucial products needed to start painting in the same style as Bob Ross from the Joy of Painting show. This range of Bob Ross materials has been specially formulated to create stunning oil paintings using successful wet-on-wet techniques that Bob Ross made so popular. Available in white, grey and black this gesso is a flat acrylic liquid primer and is best used when a dry pre-coated canvas is necessary aiding mediums such as oil. This Bob Ross gesso is water based meaning once it\'s applied it will dry quickly and when it comes to cleaning you can remove with relative ease. When applying it is best done with a foam applicator or cloth but not a brushes as it can ruin it and get stuck in the bristles. Before applying and painting with oils make sure your gesso has completely dried on the canvas leaving the surface ready to use. - Brand: Bob Ross - Colour: Grey Gesso - Size: 473 ml - Ideal for preparing a canvas for painting mediums such as acrylics or oils - Water based - Quick drying - Non-toxic