There are provided a cosmetic sheet that obscures a discolored portion of the skin and a method for producing the cosmetic sheet. There are also provided an image-processing apparatus and an image-processing method for producing the sheet. The cosmetic sheet is put on a discolored portion of the skin. The cosmetic sheet includes a thin film, one surface of which is to be put on the skin, a complementary color layer placed on the other surface of the thin film and having a color tone complementary to the color of the discolored portion, a light scattering layer placed on the complementary color layer and containing a reflective material, and a coloring layer placed on the light scattering layer and containing a coloring material.
