t is used as a bleaching agent, as an adsorbent in decolorizing and used for refining oils and fats. Fuller's earth is a mineral substance characterized by the property of absorbing basic colors and removing them from oils. In general Bleaching Earth is a decolorizing agent which will change the tint of any coloured oil to a lighter shade by changing the basic colour units in oil, without altering the chemical properties of the oil. Bleaching Earths are special clays activated by physical or chemical processes. Natural clays are found in special strata and are subjected to various processes such as desegregation in water, treatment by sulphuric acid solutions, filtration, baking, grinding, etc. The efficiency of bleaching earth depends on selecting the right grade and proper blends of the basic raw material Bentonite. The major uses of Fuller's Earth are for decolorizing petroleum oils, edible oil, vegetable oil, beer, the recycling of used lubricating (Engine) oil, fats, greases, paraffin waxes and solvents. It is also used in cosmetics, face pack, and for making masks.
Main usage of fullers Earth:

• Since over a century and till date the major use of Fuller's Earth is for decolorizing animal, vegetable and petroleum oils, fats, greases, waxes and solvents.
• There are even accounts of Fuller's Earth being used to decolorize beer.
• Granular Fuller's Earth is used to improve UV spectrometer readings and PNC values of petroleum base oil distillates.
• Cat litter.
• Cosmetic creams and face packs.
• Pharmaceuticals.
• Agricultural pesticide carriers.
• Manufacture of various catalysts used in the petroleum and chemical industries