Our food-grade Diatomaceous Earth (DE) is a fine powder made from diatoms, a type of fossilized phytoplankton. Not only can you use it to nourish your hair, skin, and nails, rid your pets and home of critters, and keep your garden healthy, you can also use it in your beauty routine. Diatomaceous Earth is registered with the FDA for use against bed bugs, fleas, and garden and home pests.