Answer
It increases tissue permeability so injections, local anaesthetics or subcutaneous fluids spread more readily, and it can help excess tissue fluid or blood be absorbed.
Sources for this answer
- Hyalase 1500 I.U. Powder for Solution for Injection/Infusion or Hyaluronidase 1500 I.U. Powder for Solution for Injection/Infusionemc · SmPC Current selected SmPC · Version 7