One eyebrow is arched higher than the other, any suggestions? (photos)

Often, one eyebrow is higher than the other due to underlying eyelid asymmetry (one side being more droopy). Meaning the eyebrow is compensating. I cannot tell from your cropped photo. See an oculoplastic specialist.

Without seeing a less cropped photo, it is difficult to fully appreciate the facial anatomy and other possible asymmetries. However, in general, it has been my experience that a higher eyebrow results from more muscular activity of the forehead on that side. I am assuming both eye sockets and surrounding anatomy are relatively equal. Though surgical intervention is sometimes tried, many times the disparity will return. The approach in this case is usually either a direct browlift over the lower eyebrow or an open coronal browlift. Alternatively, you can try botox to selectively weaken a hyperactive frontalis on the higher side or weaken the depressors on the lower side.

It is difficult to evaluate with the photos that you have provided. I recommend scheduling a consultation with a board certified plastic surgeon to discuss your options. A few options may included Botox treatment or endoscopic brow lift surgery. Best of luck to you.

you could achieve better symmetry with a small amount of Botox under the brow where you want more arch but this is temporary.  Permanent fixes are difficult to achieve and if someone promises you they can do this for you, get it in writing and know what the revision policy is.

I recommend either Botox or Ultherapy to just the lower brow to even off the asymmetry.  Botox lasts for approximately 3-4 months and Ultherapy can last up to a year or so.

Botox is the most predictable way when done correctly.   It does have to be repeated though.  Unless the asymmetry is severe, you usually end up chasing your tail with surgery.  It is difficult to correct mild asymmetries because most of the difference is due to nerve and muscle inequality which is hard to treat