Hyaluronic acid Molecular Formula (C14H21NO11)n CAS Registry Number 9004-61-9 Appearance:White or kind of white particles or powder Assay:NLT 99% Usage:Hyaluronic acid is the best in the cosmetics natural moisturizing ingredients, and has good compatibility, can add to a variety of beauty cosmetics, widely used in cream, emulsion, make up water, essence, wash grandma, bath fluid, wash.