Daler-Rowney Gesso Primer has been formulated for use as a ground for both oil and acrylic paintings. Instructions:Stir well before use. May be applied with a brush or a roller without diluting. Can be used on any non oily surface eg.Plywood, untempered hardboard, cardboard, plaster, MDF, canvas, etc. It is not recommended for use on plastics, glass or metals. It dries quickly leaving a water resistant matt white surface. It can be tinted with any Daler-Rowney acrylic colours except metallic colours. Brushes and rollers should be cleaned with soap and water before drying out. For indoor use only. For exterior use we recommend the use of Daler-Rowney Artists Gesso Primer.