Coapt Endotine Brow Fixation Devices I have been using Endotine fixation devices since 2004 and have improved the results of my browlifts. Prior to using this device, there were multiple methods of fixing the brow at the desired position but none of them seemed to give a predictable result. This new fixation device, which is a lot like a fancy carpet tack, is inserted into a small hole in the outer part of the forehead bone. It supports the brow during healing and once its job is done, it dissolves. Endotine comes in several sizes and configurations to allow for individual variations in anatomy and surgical approach.