My brow line is very uneven. What would be the best way to correct this? (photo)

Most common cause of uneven brows with one side higher is actually asymmetric upper eyelid ptosis (droopy upper eyelid). You likely have left upper eyelid ptosis and the left eyebrow is trying to assist raise the droopy eyelid. I can't tell from the photo as the eyes are blacked out. See an oculoplastic surgeon for evaluation.

is uneven eyelid ptosis (droopiness). Your eyes are blurred out so it's not possible to make this determination. However, if you indeed have ptosis in your left eye, I would strongly advise against botox to the left brow - it will make the ptosis worse.

Thank you for your question. Fillers and different surgical procedures, including blepharoplasty and brow lift, can address uneven eyelids. I suggest that you move forward and consult with a board certified facial plastic surgeon. The in-person examination will allow you and your surgeon to address your health profile and desires. You should bring a list of questions to the consultation as well. Best wishes,

Based on your singular photograph, there are a few asymmetries concerning your four head and brow.  The apex of your left eyebrow is higher than your right and therefore, when an endoscopic brow lift is performed, the 1.5-2 mm difference must be accounted and factored in the surgery. Other asymmetries such as you're right temple being more hollow than the left and the inner aspects of your eyebrow  ending at different distances from  the midline need to be addressed through filler and  your aesthetician, respectively. 

I would need to examine your brows in person to give a proper answer. You can try Botox on your right medial brow or a mini browlift done with the Irregular Trichophytic incision we developed which can adjust your brows without an obvious scar.