Hi, I have performed SMAS facelifts for over 30 years and for the past 15 years have performed many minimally, invasive SMAS facelifts. I am sorry to hear that you had this type of an issue. You should speak with your Facelift Surgeon to determine the best course of action. Thankfully, weakness or paralysis of the eyebrow, forehead or face is a rare even in the hands of an experienced facelift surgeon. It's important to make the distinction between "weakness" and "paralysis" or a complete lack of movement. It's also important to determine if the entire side (right or left side) of the forehead is affected or just the lower or upper segment (less commonly affected alone). Weakness or paralysis (complete lack of movement) of the forehead results from an injury or transection (cut) of the temporal branch of the facial nerve. During a facelift (the more invasive types described below), this nerve is vulnerable if the tissue dissection is too deep as the nerve crosses the zygomatic arch to innervate the Temporalis muscle of the forehead. Unlike the mid face, there is only 1 branch innervating the forehead, so if this nerve is injured the whole side of the forehead is weak (nerve injury) or paralyzed (nerve has been transected or cut). This vulnerability is well known by experienced facelift surgeons that know where the nerve is located and how to avoid it. Some of the smaller branches of this nerve, higher up in the forehead, may be affected by a Blepharoplasty if the dissection is carried over the lateral or upper orbital rim which may be done in a direct brow lift or suspension. An examination by a neurologist would be able to determine the level and degree of nerve injury. In the case of a transection, recovery of movement and function is very unlikely. In the case of a nerve injury but not a complete transection, the nerve has been known to regenerate with movement improving for up to 2 years. Beyond that point, no further improvement is expected. Facial exercises or more precisely "forehead exercises" may stimulate faster recovery of an injured nerve and these can be explained to you by your Facelift Surgeon or the neurologist. They are easy to perform and should pose no downside. The best prevention is avoiding dissection in the area of the nerve as is done with the minimally, invasive SMAS facelift described below. If you have "jowls” these are sagging facial tissues and the main indication for some form of a SMAS facelift. The underlying SMAS layer, of the face, must be dissected, lifted, trimmed and re-sutured (not merely folded or suspended with threads or sutures that will not last). The excess skin is then removed and the facelift incisions closed. My most popular SMAS facelift is the minimally invasive, short incision SMAS facelift that has all the benefits of more invasive facelifts (traditional, mid-face, deep plane, cheek lift and subperiosteal facelifts) but with these added benefits: very small incisions and no incisions extend or are placed within the hair. minimal tissue dissection = less bruising and swelling = rapid recovery ( several days instead of weeks or months with the more invasive type facelifts mentioned) can be performed in 90 minutes or less, with or without general anesthesia no incisions within the hair = no hair loss excess fat can be removed from the face and neck excess skin removed from the face and neck cheeks, chin and jaw line can be augmented with dermal fillers (I prefer Restylane Lyft) or facial implants most patients fly back home to parts all over the world in as little as 3 days post-op I combine facial shaping with every facelift procedure. When jowls are present, these should be done in concert and not alone or separately in order to create a naturally, more attractive face. Hope this helps.