Brustro Impasto gel Medium ( Gloss finish ) Water based medium for creating textures, knife and brush marks. Adds volume to paints and dries translucent. Brustro Impasto Medium can be applied by brush, palette knives or sponge to get different textures and 3D surfaces. Ideal for oil paints and heavybody paints. It extends the paint without altering the consistency. It dries translucent and can be painted upon. Can be added in the ratio 3:7 to paints without any colour shift. On drying there may be a little loss in volume as this medium is water based.