Published online by Cambridge University Press: 02 December 2009
Introduction
The cosmetic uses of botulinum toxin (BoNT) are the most commonly used of its applications. Interest started after the effect of BoNT was shown in the treatment of blepharospasm and the first description of botulinum toxin for treatment of glabellar frown lines was in 1992. At that time, the use of this potent neurotoxin for cosmetic indications was an interesting footnote to treatments for strabismus, torticollis and other dystonias. Subsequently, physicians began to study and use the botulinum toxins for a variety of cosmetic indications. Today, BoNT is the most commonly performed cosmetic procedure in the world. Understanding how these toxins are used in this arena is essential to any discussion of the botulinum toxins.
Dilution of the toxin for cosmetic purposes
For the purposes of this chapter, the dilution of BoNT will be described in units of the BOTOX® brand of type A toxin. Oculoplastic specialists usually inject using a 1 ml dilution per 100 units of BOTOX®, whereas dermatologists and plastic surgeons vary in their practice towards a general range from 1 ml to 4 ml per 100 units. Variations in concentration affect the concentration gradient between the toxin and its environment. In the forehead, for instance, a dilute concentration may be preferable in order to increase migration, but, in general, clinicians use lower volumes to minimize the risk of this getting into unplanned areas.
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.