Reactive dyes are a level of largely colored organic substances, chiefly applied for coloring textiles that connect themselves to their substrates by a chemical reaction that forms a client bond between the molecule of dye and that of the fiber. The configuration of chemical bonds between cotton fibers and dyes occurs. Because of this chemical bond, direct dyes offer long lasting conclusion. Basically, reactive dyes are so well-known for the cotton. Various reactive dyes are applicable with its different different speedy properties and constancy of color as well as washing capability. Our main important characteristic of reactive dyes is structure of covalent bonds with the substrate to be colored.