Macrocystis Pyrifera Extract is an extract of a giant brown seaweed, Macrocystis Pyrifera, found in the Antarctic. According to research, sea kelp as a whole is thought to be useful in skin care products thanks to its high iodine, vitamin and mineral content. It is considered an anti-septic and anti-irritant that can not only heal sun-damaged skin, but can prevent wrinkles. It is also used in beauty products because of its gelatinous quality that adds shine to hair and glow to skin (Source).