The ancient Orient cultivated soybeans for its protein, oil and lecithin content. Currently soybean oil is one of the most important oils produced in the United States. It is pressed from the soybean. Most of the lecithin (phospholipids) used in cosmetics are derived from soybeans. Soybean oil has a very high-unsaturated fatty acid compound, 2% sterolins and 30 IU per ounce of vitamin E. Unsaponifiables are a large group of compounds called plant steroids or sterolins. They soften the skin, have superior moisturizing effect on the upper layer of the skin and reduce scars. The sterolins in avocado oil have been found to diminish age spots. Oils with the highest unsaponifiables are shea butter, avocado oil, sesame oil, soybean oil and olive oil.