USANA Health Sciences, is a direct selling products. Independent Associates distribute and sell scientifically based nutritional health food and personal-care products.Comprised of both the Essentials and the Optimizers, these high-quality USANA Nutritionals are designed to provide the micronutrients (vitamins, minerals, antioxidants, and other compounds) your body needs for optimal, lifelong health by providing a complete and balanced spectrum of nutrients and antioxidants to help counteract poor nutrition and free-radical damage.