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Objectives: This presentation introduces a novel approach to analysing glabellar line contraction patterns and proposes a new injection technique for botulinum toxin. Attendees will gain insights into tailoring treatment protocols that minimise complications such as blepharoptosis and optimise aesthetic outcomes by understanding individual muscle dynamics. Introduction: Glabellar lines are commonly treated without considering the specific contraction patterns unique to each individual. This study identifies and categorises two distinct glabellar contraction patterns—oblique and vertical—and introduces a corresponding injection technique that enhances precision and safety in botulinum toxin treatments. Materials / method: We conducted a detailed anatomical analysis, identifying oblique and vertical glabellar contraction patterns. Based on these patterns, we developed a new injection protocol that adjusts depth and site targeting to align with individual muscle dynamics. Clinical observations were conducted across multiple sessions to evaluate efficacy. Results: The new injection protocol led to improved patient outcomes, with a significant reduction in blepharoptosis and more natural aesthetic results. Tailoring the injections to specific contraction patterns resulted in high patient satisfaction and fewer adverse effects compared to conventional methods. Conclusion: Our study proposes a new perspective on glabellar line contraction patterns and introduces a corresponding injection technique for botulinum toxin. This approach not only improves precision but also mitigates risks, offering a refined standard for practitioners. Further research is encouraged to validate these findings across diverse populations. Reference: Wan J, Wu R, Kim HJ, Yi KH. Glabellar dynamics decoded to refine precision in botulinum toxin treatment. J Cosmet Dermatol. 2024;23(9):2816-2820.