The ornamental design for a flask for perfumeryproduct, as shown and described.
FIG. 1 is a perspective front, top and left side view showing the new design.
FIG. 2 is front view thereof, the rear view being a mirror image.
FIG. 3 is a right side view thereof, the left side view being a mirror image.
FIG. 4 is a top view thereof, shown at an enlarged scale; and,
FIG. 5 is a bottom view thereof.
The broken lines in FIG. 1 illustrate a ribbon passing through a medallion and hanging from the neck of the flask for perfumery product, and form no part of the claimed design.