Alteromonas Ferment Extract Good Plant extracts Hydration Alteromonas Ferment Extract description _Alteromonas_ is found in deep areas of seawater. Due to its polysaccharide structure, it has water-binding properties for skin and is reportedly a good soothing ingredient. There is preliminary information indicatiing that this ingredient also contributes to repairing skin’s surface. As more research is done, it appears this ingredient holds even more promise for skin.