Can I massage the under eye area to smoothen the bumps after Juvederm tear trough filler?

You can definitely massage any bumps after injection but may only be beneficial for a few days immediately after injection. Hyaluronidase may be helpful in breaking up the lump if farther out. 

Thank you for your question.  Massage may be beneficial for smoothing areas of unwanted fullness.  I would recommend that you see your injector for an in-person reevaluation in order to determine the best course of action.  Hope this helps and best wishes!