Ecoline Liquid Watercolour Inks are a dye-based, highly fluid watercolour paint. Use them like you would traditional watercolour paints to create translucent washes and detailed illustrations. They are colour matched to the Ecoline Brush Pen range, and they can be used together seamlessly. Suitable for all kinds of creative projects. They can be applied with a brush, dip pen, ruling pen or fountain pen.