Plumpp Irish Sea Moss Gold - Irish sea moss is incredibly rich in iodine which is an important nutrient for your thyroid. A well supported thyroid produces the crucial hormones that control your metabolism. Irish sea moss contains a compound called citrulline–arginine which synthesizes collagen to give you healthy, shiny hair and smooth skin. It has been nicknamed “vegan collagen”. Irish sea moss is rich in dietary fiber we can’t digest but the bacteria in our gut can. Sea moss acts as a prebiotic or food source for these beneficial gut microbes.