The Winsor & Newton Cotman Watercolour - Purple Lake - 21ml is a high-quality watercolour paint that is perfect for creating vibrant and beautiful artwork. This paint is made with the finest pigments and is highly lightfast, meaning that the colours will remain vibrant and true for years to come. The paint is also easy to use, with a smooth consistency that allows for easy blending and layering. It is also non-toxic and safe for use by all ages.This watercolour paint is ideal for use in a variety of art projects, from painting to sketching and more. It can be used on a variety of surfaces, including paper, canvas, wood, and more. The paint is also suitable for use with a variety of techniques, such as wet-on-wet, dry-brush, and more. The 21ml tube is perfect for creating larger works of art, or for stocking up on your favourite colours.The Winsor & Newton Cotman Watercolour - Purple Lake - 21ml is a great choice for any artist looking for a high-quality watercolour paint. With its vibrant colours and easy-to-use consistency, it is sure to bring your artwork to life.