Stiff, bulging internal scar tissue 2.5 years after endo brow lift. (Photo)

You may need another surgery. Deep scar needs to be removed (shaped) either through same endoscopic approach or direct approach. A small horizontal incision over current deformity will allow surgeon to remove (reshape) current deformity leaving barely visible 1.5-2cm long scar hidden in the forehead crease. You may also need some fat grafts to avoid recurrent adhesions between skin and bone (muscle).

 In more than 35 years of forehead lifting I have never seen anyone have a poor results like this. I have no idea of what would cause this without feeling the areas to determine what can be done to correct this problem.  Only surgery is probably going to fix this. This would involve re-exploration of your forehead  and excision of the scar tissue and revising this in a natural way.

Based on your photographs as well as the time frame, perhaps there is an adhesion(scarring) between the scalp(dermis) and bone with loss of fat, due to thermal damage---either the endocope or cautery.Scarring and or areas of fat loss can be ameliorated with fat grafts.What treatments diagnostic tests and/or  treatments have you had thus far?Has anything helped at all?