11's returning after brow lift?

Browlift is a procedure to improve the position of the eyebrows. This can be performed by many different approaches. Muscle modification is a technique to remove muscle fibers from the depressor muscles for fewer wrinkles. Some surgeons even put a piece of fat in between the cut ends of muscles to ensure a separation. Even with good and safe technique, these muscle fibers may remain or they can pull on the scar. The pull will be less, but never completely gone.  I find Botox to be more effective for controlling the 11s. Safety comes first. 

Sorry to hear they are bothering you again.  I am unaware of any surgery that will completely and/or permanently eliminate these muscles from contracting.  I do surgeries to lessen the 11's (corrugator removal), but it is hard to get every fiber without causing sensory nerve loss and/or an abnormal appearance.  I doubt that your 11's will be as prominent as before your surgery.  I tell most of my patients that they usually get a 50% or slightly better improvement with them and that wrinkle blockers (botox) can still be used, but often not as much is needed and it lasts longer.  I would speak with your surgeon about your concerns.  Best regards.