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 fading.FW 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 them ideal for use by artists in the production of pictures for permanent display.Equally however colours can be substantially diluted to achieve the most subtle of tones very similar in character to watercolour. Such washes will dry to a water resistant film on virtually all surfaces and successive layers of colour can be laid over a highly predicable manner. FW Artists Inks work well through airbrushes and technical pens.