Wool grease, also known as lanolin, is a natural wax produced by the sebaceous glands of sheep. It is composed of fatty acids, esters, alcohols, and hydrocarbons. Lanoline is a derivative of lanolin, which is a mixture of fatty acids and alcohols. Suint is another form of wool grease, which is a combination of lanolin and water-soluble salts. All three substances are used in the production of wool products, such as clothing, carpets, and blankets.