1. Natural Ingredient: Sea buckthorn berry. It contains Vitamin E in its natural form which is that is stronger than synthetic Vitamin E and easier to be absorbed by human body 2. Highly Concentrated. Extraction rate 1:400. That means one ton of sea buckthorn berry fruit can only make 90 Oz. or 2.5kg of our berry oil. 3.Advanced Extraction Technology. Sea buckthorn berry oil uses internationally advanced, supercritical C02 extracting technology during production. Effectively protect the active ingredients from being damaged. Additional Details ------------------------------ Product description: 1. Natural Ingredient: Sea buckthorn berry. It contains Vitamin E in its natural form which is that is stronger than synthetic Vitamin E and easier to be absorbed by human body 2. Highly Concentrated. Extraction rate 1:400. That means one ton of sea buckthorn berry fruit can only make 90 Oz. or 2.5kg of our berry oil. 3.Advanced Extraction Technology. Sea buckthorn berry oil uses internationally advanced, supercritical C02 extracting technology during production. Effectively protect the active ingredients from being damaged.