The invention relates to an indicator dressing with a carrier element, which is, at least in regions, provided with a marker material, which material, in a specific microbial contamination, changes a color. According to the invention, a first marker material is provided, which, in a first specific microbial contamination, changes color, and at least one second marker material is provided which changes color in a second specific microbial contamination, which material differs from the first microbial contamination. The invention moreover includes a method for indicating a contamination with this indicator dressing.