USANA Health Sciences, Inc. develops, manufactures, and sells science-based nutritional, personal care, and skincare products in the Asia Pacific, the Americas, and Europe. It operates in two segments, Core nutritional and Hiya Direct-To-Consumer. The company offers USANA nutritional optimizers, including supplements for cardiovascular health, skeletal/structural health, and digestive health; Essentials/CellSentials, such as vitamin and mineral supplements for age group beginning with children 13 months of age; and food products that include meal replacement shakes, snack bars, and other related products for healthy weight management, digestive health, and energy and hydration.