The present disclosure relates to a labeling apparatus for labeling articles. In one implementation, the apparatus may include a transfer drum having at least one label retaining segment adapted to receive and to retain at least one label, a glue application unit adapted to apply glue onto the label, a cleaning unit adapted to clean the transfer drum and a control unit adapted to selectively activate the cleaning unit into at least any one of: a partial cleaning configuration in which the cleaning unit is configured to partially clean the at least one label retaining segment or a full cleaning configuration in which the cleaning unit is configured to fully clean the at least one label retaining segment.