Daler rowney white gesso primer is a unique formulation which needs no dilution highly adhesive this formula is ideal for directly sealing all semi absorbent surfaces before applying colour both acrylics and oils it can be used on surfaces including plywood untempered hardboard cardboard mdf canvas and more it is suitable for both interior and exterior applications it dries quickly to produce a matte white surface with a slight tooth which can be easily sanded for highly detailer work