Specifications Products : Siliceous Earth Diatomite Use : Industrial Use Color : White Form : Powder, Super Fine Mesh Powder Packing Type : Plastic Bags Packing Size : 25kgs Sio2 : 75 to 90% Diatomaceous Earth is a soft powder formed from the fossilized remains of diatoms (a type of hard shelled algae). Its unique in couple of ways- It has a very high silica content (which is used to build hair, skin and nails) It is very hard (Hardness of 7 on Mohs scale) . The FDA classifies Diatomaceous Earth (food grade) as generally recognized as safe and is commonly used in things like toothpaste, as an anti caking aid, for clarifying beer or wine, or to eliminate pests naturally. Diatomaceous earths unique structure makes it a great natural way to kill insects and pests (including intestinal), gently cleanse the digestive system, and improve hair, skin, nails, and teeth. The strong negative charge of diatomaceous earth means that it naturally attaches to and removes from the body things like: chemicals, viruses, bacteria, heavy metals and even radiation. Its sharp\ strong structure allows it to puncture the exoskeleton of insects on a microscopic level, causing them to dehydrate and die (while humans and animals are left completely unharmed). Diatomaceous earth (DE) is recognized as safe for human and animal use, and food grade DE is considered safe for human consumption, even during pregnancy and nursing. Uses for Diatomaceous Earth At our house, we use DE regularly to help avoid parasites, to get rid of pests like ants or fleas, and to help improve hair, skin and nails. I also personally know people who have used diatomaceous earth .