Is there a difference between a touch up and a full or half syringe Juvederm injection?
If your Juvederm was saved from your initial treatment, you can have a touch up pretty easily. Most of us do not charge for that. However, Juvederm does not come in a smaller syringe than the standard 0.8 cc. So you must purchase the whole syringe if you need the touch up. It is possible to use the Restylane smaller syringe 0.5 cc. for the touch up. The two products can mix without a problem.
As far as I know, Juvederm does not have a "touch up" syringe and you are charged for a full syringe. Radiesse does make a touch up syringe (0.3cc). This is great so that the expense is minimized.