GESSO - BLACK - JO SONJA MEDIUM 237ml BOTTLES GESSO - BLACK - JO SONJA MEDIUM 237ml BOTTLES £5.75 £4.31 Quantity: at £4.31 each Add To Basket This primer for wood, canvas and metal provides a smooth fine-grit finish with maximum ‘tooth’. Available in black and white. Directions: Apply directly to surface using a clean dry brush, roller or airbrush (for airbrushing, thin Gesso with Flow Medium starting 1:1 ratio, adding Flow Medium until desired viscosity is reached) Apply undiluted to stretched unprimed canvas. Apply subsequent coats as soon as previous coats are dry to the touch. May be sanded when dry for a smoother surface. Colours may be altered using Jo Sonja Matte Flow Acrylic or Background Colours. Add in small amounts to tint as desired. Do not mix with oil based products. Safe to dry with a hair dryer. Water based, can be cleaned up with mild soap and cool water.