Daler-Rowney FW Artists’ Ink is an acrylic-based, pigmented, water-resistant ink (on most surfaces) which have either a 3 or 4-star rating for permanence. Such a high degree of light fastness over such a range of fully intermixable colours makes it ideal for use by artists in the production of pictures for permanent display. Colours can be diluted to achieve the subtlest 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. FW Artists’ Inks work well through airbrushes and technical pens.