The ornamental design for a stopper for cosmeticapplicator, as shown and described.
FIG. 1 is a front top perspective view of a stopper for cosmetic applicator showing my new design.
FIG. 2 is a front view thereof the rear view is a mirror image of the front view.
FIG. 3 is a right side view thereof.
FIG. 4 is a left side side view thereof.
FIG. 5 is a top plan view thereof; the bottom plan view is the same as the top plan view; and,
FIG. 6 is a rear bottom perspective view thereof.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design and the dash-dot-dash broken lines illustrate the boundary of the claimed design.