To provide ink capable of inhibiting occurrence of fungi in the periphery of a label of a readily stained container such as a plastic container used for places equipped with a water supply.

In the ink for shrink labels or stretch labels containing at least a film-forming component and a solvent, the ink comprises, further, an antifungal agent. A cellulosic resin, an acrylic resin, an acrylpolyol resin, a urethane resin, a styrene-acrylic acid resin, a styrene-maleic acid resin, a rosin-maleic acid resin, etc., are preferably used as the film-forming component.