Article:
"Botox delivery by Iontophoresis - British Journal of Dermatology, November 2004"

Further reading:
http://www.sweatsolutions.org/SweatSolutions/Article.asp?ArticleCode=33984200&EditionCode=95129982

Comments:
I personally find this to be one of the most exciting prospective treatments. Iontophoresis is relatively painless...but Botox injections into the hands are terribly painful.