Wound plasters should be changed according to the severity of the wound. As a general rule, you can change the Hansaplast regular plaster once every day. However, if there is any exudate leaking through the plaster, you should change it immediately. Clean the wound between every change to ensure wound hygiene and optimum healing. Make sure to dispose of the used dressing plaster in the proper manner. Stop applying the plaster only once the skin has healed completely.