This hand cleaner with pumice by KLeen-Flo is made with natural cleaning oils found in oranges. Pumice has here a mild yet efficient use. It is a volcanic ash formed when lava is permeated with gas bubbles during the solidification process. Therefore, even if it is quite fragile, it is today one of the softest abrasives. Coming in a 3. 5 liters bottle, the solution also contains lanolin as well as skin moisturizers.