The frontal and temporal undermining were united by the incision of the temporal ligament with a sharp dissector, exposing its most inferior portion, where the Hakme ligament is located. This ligament was incised with endoscopic scissors; this maneuver simultaneously released the lateral margin of the detached periosteum. At this level, the periosteotomy continues marginal to the orbital rim in a lateral-medial direction to the supraorbital nerve, which was identified and isolated. All fibrous adhesions of the body and tail of the eyebrow found in this path were dissected using a sharp dissector until the fibers of the palpebral portion of the orbicularis oculi muscle were reached at this level, completing the horizontal periosteotomy in its entire extension, the treatment of structures, and the undermining of the periorbital, frontal and temporal regions.