DANIEL SMITH Acrylic Gesso, Titanium White is thick and heavily pigmented with excellent coverage. Made with the same Titanium White pigment we use in our oils, it is opaque, has an excellent lightfast rating and is archival. Our Acrylic Gesso is made with a high-grade acrylic emulsion which provides optimal flexibility and durability, and is more flexible than any of the oil grounds. It does not contain the oil acids of traditional grounds which tend to deteriorate cotton or linen canvas fibers, so an under sizing, such as rabbit skin glue, is not necessary, and should not be used. DANIEL SMITH Acrylic Gesso, Titanium White is recommended as a painting ground for acrylics, oils and alkyds, and cleans up with water.