Amsterdam acrylic ink combines the best properties of ink with the benefits of acrylic paint - the ultra-fluid, vibrant colours don’ t fade and dry quickly with a permanent finish. Amsterdam acrylic ink in Yellowish Green (617) is a semi-opaque colour with an excellent lightfastness (+++). · Ultra-fluid acrylic, made with a high concentration of high-quality, lightfast pigments · Odorless, water-based formula that becomes waterproof and permanent when dry · Lightfast (except reflex colours) · Stable bottle with a wide opening and dropper cap · Ideal for acrylic pouring, calligraphy, watercolour effects, airbrushing & technical drawing · Can be used straight out of the bottle with airbrushes, technical pens, fountain pens, brushes or the included dropper · Suitable for a variety of surfaces including watercolour paper, cardstock, wood, canvas and more (Smooth surfaces like plastic and metal should be primed with a suitable primer first) · Can be used in conjunction with other acrylic paints & mediums · Extensive collection of 56 colours with a wide variety in opacity, including 17 specialty colours (metallic, pearl and reflex finishes) · Proudly crafted in Europe