Grafix Incredible White Mask makes it easy to preserve the white of watercolour paper by applying it with a brush and allowing it to dry before painting. As it has no colour, it will not stain the surface. It can be tinted with any non-staining colour to contrast with whatever wash is being laid down. It is made of latex and is low-odour. Apply with a knife, brush, Incredible Nib, Color Shaper, Paint Eraser, or by spraying or spattering. Incredible White Mask is liquid enough to be airbrushed. Remove with a rubber cement pick up, by catching an edge and peeling, or even with your clean fingers. Useful for working with acrylics as well as watercolours.