It is provided a label for attaching on a packaging, particularly for cosmetical and/or pharmaceutical products, comprising a packaging label with a machine-readable identification code, particularly an EAN-barcode, and a cover label covering at least partially the identification code for rendering the identification code machine-unreadable, wherein the cover label is adapted for irreversibly damaging the identification code. Due to the cover label the identification code is machine-unreadable, so that a scanner cash register would not accept a packaging provided with this label and a resale is prevented. Since the identification code would be irreversibly damaged by the cover label, the identification code stays machine-unreadable even when the cover label is removed. The risk for an unauthorized resale of a packaging can be reduced in a facilitated manner.