Lowering one eyebrow with Botox?

Botox can definitely be used to either raise or lower brows.  This is especially useful when trying to improve symmetry of asymmetrical brows.  Make sure to go to a Botox expert who is known for customizing treatments.  If your doctor is not comfortable or confident in making your brows more symmetrical then leave and go elsewhere.  Always do your research.

One eyebrow can be lowered with Botox and this is not an uncommon treatment.  While it is always possible to get some droop of the upper eyelid when Botox is placed in the brow, the proper placement can make this event more unlikely.  I would also say with the low dose that would be used, it would be unlikely for any eyelid droop to occur.