The major development of inks in recent years has been the increasing use of pigments and acrylic resins the differences between the dye based inks and the pigmented inks were slight reduction in colour intensity but much improved resistance to fadingfw artists ink is an acrylic based pigmented water resistant ink in a range of 38 colours all of which have either a 3 or 4 star rating for permanence such a high degree of lightfastness over such a range of fully intermixable colours makes th