The Winsor & Newton Designers Drawing Ink is a professional-grade ink that is perfect for creating detailed drawings and illustrations. This ink is made with a high-quality formula that is lightfast and waterproof, ensuring that your artwork will last for years to come. The Burnt Sienna color is a warm, earthy brown that is perfect for adding depth and texture to your artwork. The ink comes in a 14ml bottle, which is enough to last for multiple projects.This ink is suitable for use with a variety of drawing tools, including dip pens, brushes, and airbrushes. It is also compatible with a range of surfaces, including paper, board, and canvas. To use, simply shake the bottle before use and apply the ink to the desired surface. The ink will dry quickly and can be easily blended with other colors.The Winsor & Newton Designers Drawing Ink is an excellent choice for professional artists and illustrators. It is a reliable and high-quality ink that will help you create stunning artwork. With its lightfast and waterproof formula, you can be sure that your artwork will last for years to come.