EXTERNAL PREPARATION, METHOD OF APPLYING EXTERNAL PREPARATION, IONTOPHORESIS DEVICE AND TRANSDERMAL PATCH.

摘要

By forming on the skin, films M1 to M4 comprising an external preparation containing a hydrophilic polymeric matrix agent and an ion exchange resin to be dispersed in the hydrophilic polymeric matrix agent or films M1 to M4 comprising an external preparation containing a hydrophilic polymer with an ion exchange function, and carrying out iontophoresis via the films, both the suppression of release of a biological counterion from the skin of the living body and the maintenance of a favorable state in which a working electrode structure and a non-working electrode structure come into contact with the skin can be achieved, and administration efficiency of drug is improved.