Is this eyelid or eyebrow ptosis or Botox? 2 months after Botox (photo)

Your brows are not showing in the before picture, but from what I can see it looks like you have eyelid ptosis and not a brow drop. 4 Units of Botox is not much, but if improperly placed can be enough to cause a ptosis. Iopidine drops may help, but either way things should go back to normal once the Botox wears off in 3-4 months. Make sure you find an experienced injector next time. Best wishes.

It appears you have upper eyelid ptosis, asymmetric.  See an oculoplastic specialist for evaluation.

It's best to allow 3-4 months for the Botox to dissipate completely and then reassess, especially when important decisions are being made about future treatments.  4 units for a brow lift sounds suspect.  Botox provides targeted relaxation of muscles.  These muscles are in an intricate balance with opposing muscles, so the results from different injectors are wildly different.

This can be improved with Iopidine drops, venus legacy and thermage treatments. Botox results resolve in 3-4 months. See an expert. Best, Dr. Emer

Thank you for sharing your question and photographs.  Unfortunately without an in-person examination it is difficult to offer definite advice but this appears more consistent with eyelid ptosis.  This can be improved with eye drops until the Botox fully wears off after 3-4 months.  Hope this helps.