Natural indigo is a deep blue dye derived from the leaves of the Indigofera plant. This dye has been used for thousands of years in various cultures around the world, particularly in India, Africa, and South America. The dyeing process involves fermenting the leaves to extract the indigo pigment, which can then be applied to fabrics. Unlike synthetic dyes, natural indigo is biodegradable and less harmful to the environment. It produces vibrant colors and has a rich history in textile production, especially in traditional crafts like batik and shibori. Today, there is a growing interest in sustainable fashion, leading to a revival of natural indigo dyeing techniques.