Provides mild exfoliation properties with color variation in soap and cosmetics.Why People Use This Product:To provide mild exfoliation properties and color variation in products.Popular Products That Use This Ingredient:Scrubs. Soap. Interesting Facts:Pumice is a volcanic ash which is formed when lava is permeated with gas bubbles during the solidification process. Because lava has similar properties and chemical make-up as glass, pumice is very abrasive but unlike glass, it is very soft. Pumice is the softest abrasive media in use today. All Natural.Physical Form: Tan powder Solubility: Insoluble in water or oil Country of Origin: United States