The Use of Botulinum Neurotoxin Type A in Aesthetics: Key Clinical Postulates.

[BACKGROUND] The most common aesthetic procedure performed worldwide is the injection of botulinum neurotoxin Type A (BoNT-A). Aesthetic providers must fully comprehend the objective scientific data, theoretical mechanisms of action, and differences between brands of BoNT-A.

[OBJECTIVE] To determine and review the relevant clinical postulates for the use of botulinum toxin in aesthetics.

[MATERIALS AND METHODS] The BoNT-A clinical postulates presented here discuss how each brand of BoNT-A acts identically, how the molecular potency may vary between the different products, how patient age, gender, genetics, and muscle mass cause variation in toxin receptor number and density, and how both practitioner and patient can affect toxin distribution.

[RESULTS] A total of 8 clinical postulates have been identified that are key to understanding the use of botulinum toxin in aesthetics and to obtaining the best clinical results.

[CONCLUSION] All of these factors affect the potential efficacy of the injected toxin and hence the aesthetic results obtained.