The process of removing dirt, dust and grease from the sheared hair is called [[1]].

Raw or grease wool is the wool that is taken directly from the sheep. To remove the dust, dirt and grease from the wool, it is washed in the tanks using detergent and alkali. This process of removing dust, dirt and grease from the raw sheared wool is called scouring. Nowadays, it is done with the help of machines.