Left eyebrow doesn't move after brow lift. Can this be fixed?

There may have been some neuropraxia of the frontal branch of the facial nerve. You need to discuss this with your surgeon and make sure they are aware.

Hello, hope you are well. Based on your description, you most likely have a nerve injury of the frontal branch of the facial nerve. In the majority of cases, this is a temporary problem that gradually resolves over time. It has been 1 month since your surgery, but nerve injuries may take many months to improve. Make sure that your surgeon is aware. Sometimes applying Botox to the opposite side can help to improve symmetry while giving the problem time to resolve.
Best,Dr. Tower

Paralysis of the eyebrow is possible after a facelift, and is reported in a small percentage of people. This is due to some form of injury to the frontal branch of the facial nerve. The vast majority of these will simply get better over time as long as you are patient. Treatment of the unaffected side with Botox or Daxxify, so the unaffected brow does not move either will at least allow you to gain some degree of symmetry while you’re waiting for the affected side to resolve. Follow up closely with your plastic surgeon so they can monitor the progress. Best wishes.