Use of an in vitro human skin permeation assay to assess bioequivalence of two topical cream formulations containing butenafine hydrochloride (1%, w/w)
In vitro skin permeation assay conducted to compare 2 butenafine cream formulations. Goal of the assay was to use it as surrogate for BE study between the formulations. No statistically significant permeation difference was observed between the creams. The results were accepted by USFDA and led to authorization to market the new cream.