Bleaching is a process in which natural colouring matter is removed from a fibre to make it white. This process can be extended to other uses for example in yarn or fabrics or pulp and paper industries where cellulose used in making paper is bleached to white. Bleach solution can also be defined as any solution that is capable of bleaching colouring matters. Bleach solution ranges from simple to complex types in various trade names like parazone, jik etc. They completely depends on the make up of the ingredient materials.