I had dysport put into my forehead 11 days ago, my brow has dropped and my eyes are small and puffy! How long will this last?

I am sorry that your brows have dropped this may be due to placing the dysport low or a very heavy brow or both.

It sounds like you have brow and lid ptosis from too much Dysport into the frontalis and/or glabella. Particularly on older patients, injectors need to go up much higher with injections, which it sounds like was not done for you. Also, most older patients have a natural ptosis of the eyelid, so this can also be troublesome if the injections are too low. 25 units is an extremely small dosage of Dysport. A normal treatment for this area would be 75 units. Are you sure you got Dysport and not Botox?? Nevertheless, time will take away the results and your forehead, brow, and eyelids will return to normal positioning, with the entire effect gone in 3-4 months, and a lessening of it, especially in the eyelid region, in several weeks. "This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."