RT Book, Section A1 Glogau, Richard G. A2 Kang, Sewon A2 Amagai, Masayuki A2 Bruckner, Anna L. A2 Enk, Alexander H. A2 Margolis, David J. A2 McMichael, Amy J. A2 Orringer, Jeffrey S. SR Print(0) ID 1161348210 T1 Botulinum Toxin T2 Fitzpatrick's Dermatology, 9e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9780071837798 LK dermatology.mhmedical.com/content.aspx?aid=1161348210 RD 2024/04/19 AB When Drs. Jean and Alastair Carruthers made the critical leap from ophthalmologist Dr. Alan Scott’s seminal use of botulinum as an alternative to strabismus surgery to the cosmetic use of the toxin to treat the glabellar frown lines, no one could have predicted the explosive growth of this agent in the commercial market.1 On April 15, 2002, the US Food and Drug Administration (FDA) approved Allergan, Inc.’s Botox Cosmetic* (botulinum toxin type A) for “temporary improvement in the appearance of moderate-to-severe glabellar lines in adult men and women 65 or younger.” This was the first elective cosmetic indication for which any commercially available botulinum toxin in the US market had been approved.