A Narrative Review of Evolving Techniques in Nonsurgical Rhinoplasty: Risk Profile and Clinical Outcomes of Fillers

Nonsurgical rhinoplasty (NSR) is a minimally invasive alternative to surgical rhinoplasty that uses dermal fillers to enhance nasal aesthetics. When performed by trained injectors, NSR offers rapid correction with relatively low downtime. This narrative review explores the historical evolution, anatomical considerations, filler materials, patient selection, procedural techniques, risk mitigation strategies, and clinical outcomes associated with NSR. Hyaluronic acid (HA)-based fillers remain the gold standard due to their reversibility, biocompatibility, and favorable safety profile. Recent innovations, including ultrasound-guided injections, hybrid techniques combining HA with polydioxanone (PDO) threads, and AI-assisted facial mapping, have improved precision and patient satisfaction. Although most complications are transient, such as edema and erythema, rare but severe events like vascular occlusion, skin necrosis, and visual loss underline the importance of detailed anatomical knowledge and preventive techniques. The review also emphasizes individualized treatment approaches considering ethnic and anatomical variations. Overall, NSR demonstrates high efficacy, rapid recovery, and reversibility, with satisfaction rates exceeding 90% across multiple studies, reaffirming its position as a valuable aesthetic procedure when performed by trained professionals.