Ideal For Watercolor Work, Calligraphy, Technical pen & Drawing illustrations. Aquafine Watercolour Ink is a pigmented, water soluble ink range with high degree of lightfastness. It can be used straight out of the dropper, or diluted to archieve the most subtle of tones. Because the inks are formulated with genuine fine art pigments, colours will remain bright and vivid over time compared to dye-based inkswhich will quickly fade. Aquafine inks can be applied using traditional brushes, but also work well through airbrushes, technical pens, and paint markers making them ideal for producing technical illustrations and finely worked drawings. Suitable for use of artists, illustrators, graphic designers, calligraphers, decorative artists and hobbyists.