Hyaluronic acid, beloved beauty ingredient, comes in many, many, many shapes and forms. First, there’s the kind that naturally exists in your body. (Yup, you have your own hyaluronic acid supply pumping through your system and plumping your cells right this very second.) Then, there are synthesized hyaluronic acid gels, like Juvéderm and Restylane, used for injectable fillers.
