Hydrogen peroxide is a total chlorine free (TCF) bleaching agent. It is appropriate for chemical, mechanical and recycled pulp to achieve a wide range of brightness. It has both oxidizing and reducing properties which is pH depended. The chemical formula of this bleach is H2O2. Pure hydrogen peroxide is very light blue color but colorless in solution. Recently, the use of this bleaching agent increased significantly in the pulp and paper industry due to easy to use, lower production costs, improved paper quality, increased yield percentage and environmental friendly. The brightness of the paper that is made from hydrogen peroxide bleach is more stable. A color reversion of about 1% is obtained over a long period. The results obtained from hydrogen peroxide bleaching depend upon the species of wood, age of wood, lignin content etc.