US Patent No. 10,231,907 B2: Algenist Holdings, Westport, CT, has patented a gel, lotion, cream or ointment composition suitable for topical administration that contains microalgal exopolysaccharide particles. The exopolysaccharide is produced by microalgae of the genus Parachlorella. The exopolysaccharide particles are made by culturing microalgae cells in a culture medium so that exopolysaccharide is secreted by the microalgal cells into the culture medium; separating the exopolysaccharide fro...