Olive oil has been used for thousands of years and is believed to have originated in the Mediterranean region. Today, the largest producers of olive oil are Spain, Italy, and Greece. Olive oil is derived from pressing the oil out of a whole olive fruit. It's rich in monounsaturated fatty acids—healthy fats that pose a variety of health and cosmetic benefits—and also contains skin-loving antioxidants.   In Ayurvedic medicine, olive oil is used for its nourishing and rejuvenating properties. It is believed to balance the Vata dosha and has been used to treat dry skin, joint pain, and constipation.