The natural oil or wax present in sheep’s wool. For most processes, lanolin is removed to make the wool yarn soft and fine; however, when knitting hunting and seafaring sweaters, lanolin is left in as a natural and essential waterproofer. In this state, lanolin has a slightly waxy feel and a hint of the distinctive wet sheep aroma; however, lanolin-rich wools can be used for outdoor furnishings, such as chair seat cushions and picnic blankets..
Lanolin and its derivatives are often used for skin creams, for treating severe skin conditions and as the emolient ingredient in shaving foam.