Coconut charcoal is also known as coconut shell charcoal. It’s a type of activated charcoal made from coconut shells. To make the activated charcoal, coconut shells go through carbonization. This means they are heated without oxygen. After that, the charcoal activates with more processing. This processing increases its surface area and enhances its adsorption properties. Coconut charcoal has a porous structure and absorbs toxins and impurities. This makes it useful for water purification, air filtration and as a dietary supplement for detoxification.