FW Artists Ink is an acrylic-based, pigmented, water resistant ink in a range of 30 colors A high degree of lightfastness over such a range of fully intermixable colors makes them ideal for use by artists in the production of pictures for permanent display. The colors can be substantially diluted to achieve the most subtle of tones, very similar in character to watercolor. Such washes will dry to a water resistant film and successive layers of color can applied in a highly predictable manner.