Juvederm & Restylane are leading cosmetic brands. Both companies produce high quality filler for different areas of the face with slightly different formulas
depending on the injection area. Restylane is made by Q-Med from Sweden and Juvederm is made by Allergan
Linked below is an article comparing the two brands. The Skin Clinic primarily uses Restylane. Juvederm can be requested, but would cost extra.