Traditionally extracted from the species Chondrus crispus (Irish moss), carrageenan is now predominantly derived from the species Kappaphycus alvarezii and Eucheuma denticulatum. This sulphated polysaccharide is generally used to thicken formulas and give them a gel-like consistency. However, it also has benefits for the skin. For instance, it is capable of stimulating the natural production of hyaluronic acid. Find out more about its extraction process here.