Lanolin, also called Adeps Lanae, wool wax, wool fat, anhydrous wool fat or wool grease,'s a greasy yellow substance secreted by the sebaceous glands of wool-bearing animals, with the vast majority of it used by humans coming from domestic sheep. Chemically akin to wax, it can be used as a skin ointment or water-proofing wax, and's also sometimes used as a raw material in the manufacture of such products as shoe polish. Lanolin's ability to act as a waterproofing wax aids sheep in shedding water… (More on Lanolin)