The ornamental design for a cosmeticproductpackage, as shown and described.
FIG. 1 is a front perspective view of a cosmetic product package embodying the present design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines are provided for the purposes of illustrating an environment related to the cosmetic product package that form no part of the claimed design.