Lanolin, << LAN uh lihn, >> is a substance obtained from the greasy coating found on sheep’s wool. A common name for lanolin is wool fat, though lanolin is classified chemically as a wax. Lanolin is a mixture of more than 200 organic compounds.
There are two forms of lanolin–anhydrous and hydrous. Anhydrous lanolin is a yellowish, sticky solid that melts at temperatures from 38 °C to 44 °C. Hydrous lanolin is an emulsion consisting of tiny drops of lanolin evenly distributed in water. See Emulsion .
Lanolin helps the skin retain water and is an emollient or moisturizer. Lanolin can make dry skin feel soft and smooth, so it is used in hand creams and cosmetics. Lanolin also can retain various medicines, so it is often used as a base for ointments and salves.
