permanence? Volatile Organic Compounds? Fluidity?
well the difference between dye and stain is thought to be 'dye=bonded with fibre' whereas a stain sits on the surface [and often comes away at least partially when the object is washed]but a dye can be used as ink without being heat-fixed. are you going to wash that paper? will it matter?mark-making is fun. play.
Thanks for your interesting comments. I am not too worried about permanence with this stain. The only reason I ask is because someone asked me, and I struggled to define the difference between an ink and a dye.