Sea buckthorn is a deciduous shrub or tree of the genus Hippophae in the family Elaeagnaceae. It is found throughout Europe and Asia, and its leaves, flowers, seeds, and fruits are used as medicine. Sea buckthorn contains vitamins A, B1, B2, B6, and C, as well as other active ingredients, and has been used traditionally to slow down the aging process. People use sea buckthorn for burns, eczema, acne, indigestion, high blood pressure, wrinkled skin, and many other purposes, but there is no good scientific evidence to support most of these uses. Sea buckthorn is also used as a landscaping shrub with an aggressive basal shoot system used for barrier hedges and windbreaks, and to stabilize riverbanks and steep slopes.

Sea buckthorn is rich in various vitamins, minerals, and beneficial plant compounds, and is naturally full of antioxidants, which help protect the body against aging and illnesses like cancer and heart disease. Its berries are especially rich in vitamins A, C, K, and E, and contain considerable amounts of iron, calcium, magnesium, potassium, copper, and zinc. Sea buckthorn oil, which is extracted from the berries, is a popular natural hair and skin remedy and is often added to over-the-counter cosmetic products such as shampoos and face creams. It is said to provide health benefits ranging from more radiant hair and skin to a lower risk of cancer and heart disease. However, there is very little evidence to support most of these claims.