Hello Mandylum,That is a great question. There are many technical aspects that go into an endoscopic brow lift. All of them involve some form of trying to keep the brow elevated. This may be stitches, an absorbable implant, tissue glue or a combination of them. The goal with these is to keep the brow elevated in its new position while the body heals and the brow assumes its new position. Assuming this is done successfully (which it usually is), the results are permanent. What I mean by that is your brow will always be in a better position than if nothing had been done. But the moment the surgery is over, gravity and age will continue and the brow will slowly drop with time, more commonly on the outside of the eyebrows than near the middle. How fast this occurs depends on how expressive you are (there is a muscle that pulls down the eyebrow on the outside so more expression pulls it faster), how much sun exposure you get, how you heal, and the quality of your skin. Not everyone requires a touch up procedure but with a brow lift it is more common. For some this can occur within a year but more commonly it is 5-10 years down the road before most people consider a tuck up procedure.I would recommend you discuss this with your surgeon as he or she will be able to provide more specifics based on his or her experience with previous patients. I hope this helps and good luck.