Daler-Rowney FW Acrylic Inks are acrylic-based, pigmented, water-resistant artists’ inks with a high degree of lightfastness and intermixability. FW Acrylic Ink can be used straight out of the dropper or diluted to achieve the most subtle of tones. Pigment-based inks.High lightfastness (3*). Fully intermixable colours. Usable with airbrush and technical pens. Sizes: 29.5ml Made in England.