Dyes are colorful substances used to impart color to various materials, such as paper, plastics and even biological specimens. Dye chemistry is the field of chemistry that deals with the study of dyes and their properties. Dyes can be classified into various categories based on their chemical structure, application, and method of synthesis. In recent years, there has been a growing interest in the development of environmentally friendly dyes and dyeing processes. This has led to research in areas such as natural dye extraction and application, as well as the development of sustainable and non-toxic synthetic dyes. The book " Chemsitry and Application of Dyes" is a comprehensive guide that explores the fascinating world of dyes and their wide-ranging applications. This books delves into the fundamental principles of dyes chemistry, providing a solid foundation for understanding the intricacies of dye synthesis, structure and properties. It offers valuable insights into the diverse uses of dyes across various industries, including textiles, printing, cosmetics, food and biomedical applications.