Liquitex Professional Black Gesso Surface Prep Medium Bottle, 8-Ounce Thick, creamy with satin finish; Good pigment load Retains peaks and brush strokes; Ideal for learning color theory and color mixing Includes 250ml tube of acrylic paint Intermixable with Liquitex Professional Acrylic Paint Colors and Mediums. Conforms to ASTM D4236; Safe for educational use