Pigments are large in particle size so will not go through fine line nozzles for airbrushes nor will they be suitable for technical pens or fountain pens. The best means of applying pearlescent colours is by using a dipper pen, ruling pen or brush. These acrylic based inks are water soluble when wet but dry to a water resistant film. All colours are good to extremely lightfast. The shimmering pearl effect created by these colours is startling. All colours are intermixable. They are permanent and translucent, but work best is put down freely rather than applying successive layers of colours. There are many interesting and exciting ways of using FW Pearlescent Inks. This breakthrough in colour technology offers almost limitless creative potential in areas not normally associated with inks and includes applications to wood and leather (to a limited degree, glass and ceramics) as well as to paper and board.