For use on paper, cardstock, plasitc, metal, wood, chipboard and other surfaces. Great for:
drawing using a paint brush
placing the liquid into a spray bottle to spray with
filling a water brush and use as a water colour
mixing liquid into mediums to change their colour
 
Ink is water soluble - semi permanent when dry, therefore you can layer other wet mediums on top of the ink with minimal running of ink.
 
It is acid free, non-toxic and non flammable.