The Winsor & Newton Cotman Watercolour - Prussian Blue - 8ml is a high-quality watercolour paint that is perfect for any artist. This paint is made with the finest pigments and is highly lightfast, meaning it won't fade over time. It is also highly transparent, allowing for a wide range of colour mixing and blending. The 8ml tube is ideal for small projects and for travelling.The Cotman Watercolour range is designed to offer artists excellent quality at an affordable price. The paints are easy to use and can be used on a variety of surfaces, including paper, canvas, and wood. They are also suitable for use with a variety of techniques, such as wet-on-wet, dry-brush, and glazing.To use the Winsor & Newton Cotman Watercolour - Prussian Blue - 8ml, simply squeeze a small amount of paint onto a palette and mix with water. The paint can be applied with a brush or a sponge, and can be used to create a variety of effects. When finished, the paint can be easily cleaned up with soap and water.The Winsor & Newton Cotman Watercolour - Prussian Blue - 8ml is a great choice for any artist looking for a high-quality watercolour paint. It is easy to use, highly lightfast, and offers excellent colour mixing and blending. With its 8ml tube, it is perfect for small projects and for travelling.