Vitamins F, an essential fatty acid, is composed of two fatty acids—linoleic acid (LA) and alpha-linoleic acid (LNA)—with linoleic acid being the most complete fatty acid. There are two basic categories of EFA's (essential fatty acids)—omega-3 and omega-6—which include linoleic acid and gamma-linoleic acid. The body is not capable of manufacturing essential fatty acids, while the fatty acid arachidonic acid can be synthesized in the body from linoleic acid. Seabuckthorn contains 22 types of unsaturated fatty acids. Fatty acids are needed for normal growth, a well balanced hormone level and properly working immune system. To the skin, it brings suppleness and a youthful appearance. Arthritis gets controlled from these fatty acids and they also aid in the transmission of nerve impulses. Their shortage may lead to hair loss and eczema and may cause damage to the kidneys, heart and liver. The immune system can become less efficient with resultant slow healing and susceptibility to infections.