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. Can be diluted to watercolours, watersoluble and water-resistant. Usable with airbrush and technical pens. Made in England.