Advanced Injection of Botulinum Toxin in the Nasal Muscles: A Novel Dynamic Change in Facial Expression

Area of Science:

• Aesthetic medicine
• Facial anatomy
• Neuromodulation

Background:

• The levator labii superior alaeque nasi (LLSAN) muscle connects nasal and perinasal muscles.
• Understanding nasal muscular dynamics is crucial for effective facial Botulinum toxin (BTX) treatments.
• LLSAN's role influences overall facial muscular dynamics.

Purpose of the Study:

• To evaluate the effects of global facial BTX injections, including nasal muscles.
• To analyze the impact of LLSAN muscle treatment on facial aesthetics and dynamics.

Main Methods:

• Retrospective analysis of 227 patients treated with facial BTX injections over 18 months.
• Photographic documentation at rest and during motion, pre- and post-treatment.
• Inclusion of nasal muscles in the comprehensive facial injection pattern.

Main Results:

• Observed eyebrow tail lifting and softening of crow's feet.
• Reported improvement in nasal tip drooping and reduction in lip philtrum length during smiling.
• Demonstrated positive outcomes through case examples.

Conclusions:

• Global facial muscle treatment with BTX, encompassing nasal muscles, enhances smile and facial expressions.
• Paralysis of the nasal LLSAN component potentially strengthens the elevated upper lip muscle.
• This approach offers a comprehensive strategy for facial rejuvenation and dynamic expression improvement.