Hazelnut oil is a type of oil extracted from the nuts of the hazelnut tree, primarily found in regions like Turkey and Italy. It has a light, nutty flavor and is often used in cooking, salad dressings, and baking. The oil is rich in monounsaturated fats, making it a healthier alternative to some other cooking oils. In addition to its culinary uses, hazelnut oil is also popular in cosmetics and skincare products due to its moisturizing properties. It contains vitamins and antioxidants that can benefit the skin, making it a common ingredient in lotions and creams.