A composite packaging foil (4) for a childproof and/or senior friendly packaging (5), comprising a first layer (1) having a first outer surface (11) and a first inner surface (10), wherein the first layer (1) imparts tear-inhibiting properties to the packaging foil (4), a second layer (12) having a second outer surface (21) and a second inner surface (20), wherein the second outer surface (21) of the second layer (2) is sealable against a mating surface, an inner layer (3) arranged between the first inner surface (10) of the first layer (1) and the second inner surface (20) of the second layer (2). The packaging foil (4) has at least one weakening zone (6) in which the tear-inhibiting properties of the packaging foil (4) are reduced by a plurality of perforations (7) that are present in the first layer (1). The density of perforations (7) in the weakening zone (6) lies between 50 and 250, preferably between 50 and 150 and particularly preferred between 70 and 130 perforations per cm2.