How long will the droopiness of eyebrows last?

If too much Botox is injected into the muscles that elevate the brow, the eyebrows can drop and cause a heavy feeling and look to the upper eyelids.  As the Botox wears off the eyebrows should gradually elevate.  Usually it takes about a month.

I suggest seeing an expert if you have eyebrow drooping after botox as this will take 2-3 months to resolve, but luckily will fully resolve as botox treatment is temporary. Having an injector with experience is the most important. Best, Dr. Emer

Eyelid ptosis or drooping is an uncommon complication after Botox.  Unfortunately, it may take several months to resolve depending on the amount injected and the degree of drooping.  There are some prescription eyedrops that may help temporarily to elevate the lids in some patients; however, be aware that these drops are very drying to the eyes and should be used in conjunction with an eye lubricant solution.   The drops don't work on everyone and will not complete improve the droop, but it may be worth a shot.