The present invention relates to a biodegradable iontophoretic patch and a method for manufacturing the same. The ion patch comprises a drug-loaded gel and a buffering gel, and by adding a pH adjuster to the buffering gel, it is possible to prevent excessive increases in pH during use of the ion patch. Therefore, the invention can be used in the manufacture of ion patches for enhancing skin absorption of cosmetic or pharmaceutical compositions.

Proposed is a self-current-generating skin-applicable patch with a first area in contact with the skin and a second area adjacent to and spaced apart from it, where either area contains a biodegradable metal, decomposable and absorbable through skin contact or reaction with tissue moisture. The patch includes a first electrode layer directly contacts the skin as a thin sheet integrated with the first area and has at least one fluid-transferable penetration part, a second electrode layer of a material with a different standard reduction potential is positioned opposite a skin-contacting side, partially extending to connect electrically to the second area, and a support layer, a hydrophilic sheet of predetermined thickness, is positioned opposite the skin-contacting side, having an ionic solution supported. Thus, sufficient iontophoresis and other micro-current effects with active ingredients are achieved through self-generated micro-current, even without a battery-like external power source.