Ascophyllum nodosum is a type of large brown seaweed that grows in shallow, nutrient-rich coastal waters in various parts of the world. Kelp is often considered to be a superfood, due the high content of minerals. This algae is one of the best natural source of iodine. Used in all types of soaps, scrubs, creams & salves, and a great sking toner ingredient in facial masks, scrubs. Use in your bath teas, and bath salts too. Also great as a natural green soap colorant. Add in with your oils when you make the lye soaps. It is commonly used in salads, shakes, or just as a mixture of water and powder.