French green clay is a substance that is used for external cosmetic treatments as well as some internal applications by practitioners of alternative medicine.
French green clay is available in a dry powdered form for a variety of uses as well as in premixed soaps, scrubs, facial powders, and masks for cosmetic purposes.
uses for French green clay include poultices to treat arthritis, sore muscles, and sprains; ready-to-use pastes for application to cuts, bruises , insect bites, stings, and minor burns ; and mineral...
You simply mix it with water. It should have the consistency of thicker paste. Once applied to skin it should hold and not drip or have water running from it.