The ornamental design for the anti-wrinkle pillow, as shown and described.
FIG. 1 is a top perspective view of the anti-wrinkle pillow in accordance with a first embodiment;
FIG. 2 is a top elevational view of FIG. 1, the bottom elevational view being the same as the top elevational view;
FIG. 3 is a front elevational view of FIG. 1, the back elevational view being the same as the front elevational view;
FIG. 4 is a right side elevational view of FIG. 1, the left side elevational view being the same as the right side elevational view; and,
FIG. 5 is a cross sectional view of FIG. 1, along plane 5-5 in FIG. 2.
The ornamental design that is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.