The Ordinary- Marine HyaluronicsMarine Hyaluronics offers an exceptionally lightweight serum, acting as a hyaluronic acid alternative, which directs water where you need it most. By combining exopolysaccharides from skin friendly marine bacteria, Hawaiian red algae, glycoproteins from Antarctic marine sources, micro filtered blue green algae, and several amino acids, this water based formula targets hydration below the skin surface, resulting in a softer, plumper complexion.