Can further improve the flow of the paint when Procolour is used as a watercolour.
For use when converting Procolour to an ink.
Helps prevent spattering and nozzle build-up when using Procolour Artist Colours as airbrush ink.
Helps water-diluted Procolour Artist Colours run off the nib of a dip pen more easily so lines can be drawn in one unbroken motion.
