In a world inundated with colour, the importance of dyes cannot be overstated. Amongst the vast spectrum of dyes available, reactive dyes like Reactive Blue 21 hold a special place due to their unique properties and extensive application. These dyes, first introduced in the 1950s, have gained immense popularity over the years and have become an indispensable part of various industries. This blog aims to dive into the vibrant world of reactive dyes, exploring their usage, best applications, and the industries they revolutionize.