Botulinum Type A Toxin in the Treatment of Lateral Canthal Lines (Crow’s Feet)

Despite the wealth of information in the literature regarding the cosmetic applications of botulinum type A toxin (BoNT-A), and the widespread use of the BoNT-A for cosmetic applications, the number of randomised, controlled clinical trials is small. Much of the published information is based on open-label studies or anecdotal data. Of the robust trial data that is available, the vast majority relates to the treatment of glabellar lines, and there is little data available regarding the use of BoNT-A in lateral canthal lines. This study aims to determine the optimum dose for the use of BoNT-A in this area.

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