The ornamental design for a container for a personalcare product, as shown and described.
FIG. 1 is a perspective view of a container for a personal care product showing the new design;
FIG. 2 is a front elevation view of the container of FIG. 1, the rear elevation view being a mirror image thereof;
FIG. 3 is a side elevation view of the container of FIG. 1, the other side elevation view being a mirror image thereof;
FIG. 4 is a top plan view of the container of FIG. 1; and,
FIG. 5 is a bottom plan view of the container of FIG. 1.
The broken line showing of the personal care product is included for the purpose of illustrating environmental structure and forms no part of the claimed design.