Aloe, Cape (Aloe ferox): The bitter yellow juice found just below the skin has been harvested for centuries for its laxative properties, the treatment of arthritis, for its healing properties and for use in cosmetics. The hard, black, resinous product is known as Cape aloes or aloe lump and is used mainly for its laxative properties but is also taken for arthritis. Cape Aloe contains aloin, principally [...]