Provided is a laminate film characterized by laminating at least one each of a water soluble resin layer and a polylactic acid resin layer at least at one surface of a substrate film, the thickness of the water soluble resin layer being 0.1-15 µm, and the thickness of the polylactic acid resin layer being 10-500 nm. By means of such a configuration, it is possible to obtain a laminate film that is optimal as an external preparation for skin such as a wound covering agent, and antiadhesive agent, or a skin care article, and that is such that the water soluble resin layer and the polylactic acid resin layer can be easily peeled from the substrate film, there are superior following properties, adhesion, and coating properties with respect to flexible and curved adherends, and there is superior compatibility with organs and the like, such as the skin and internal organs.
