Hyalorinudase is an enzyme = protein. It is injected in very small quantities and is eventually absorbed into the blood stream, metabolized and excreted.
Hyaluronidase is a naturally occurring enzyme. Voluma and other hyaluronic acid fillers are able to be dissolved by hyaluronidase. The body simply eliminates the product. Depending on the manufacturer, hyaluronidase may be from recombinant human sources or may be animal derived.