Anatomy-guided Injection Techniques for Nasal Augmentation in Asians: Practical Guidelines and Safety Considerations

Nasal augmentation using dermal fillers has become a popular nonsurgical esthetic procedure, particularly among Asian populations. This review explores the anatomical considerations, injection techniques, and safety measures essential for successful outcomes. The complex nasal anatomy, comprising 5 distinct soft tissue layers and intricate vascular networks, necessitates a thorough understanding to minimize risks of complications such as skin necrosis and visual impairment. The authors discuss the ideal nasal proportions and angles, emphasizing the importance of tailoring treatments to individual ethnic characteristics. The article outlines both needle-based and cannula-based injection techniques for the nasal dorsum, tip, and columella, highlighting the advantages and precautions for each approach. The dual-plane remodeling technique, utilizing firm and soft fillers, is presented as an advanced method for comprehensive nasal reshaping. Special attention is given to the columella injection technique, which addresses both esthetic and functional aspects of nasal tip projection. The discussion emphasizes the importance of choosing appropriate fillers, understanding vascular anatomy, and employing safe injection practices. As the field of non-surgical rhinoplasty evolves, continued refinement of techniques and ongoing research are crucial for enhancing safety and expanding the range of achievable outcomes in nasal augmentation with dermal fillers.