We claim the ornamental design for the hair dryer, as shown and described.
FIG. 1 is a left side view of the new ornamental hair dryer of the present invention.
FIG. 2 is a right side view thereof.
FIG. 3 is a top view thereof.
FIG. 4 is a bottom view thereof.
FIG. 5 is a front view thereof; and,
FIG. 6 is a rear view thereof.
The dashed lines appearing in the FIG. 5 in the circular opening represent environmental structures, namely internal elements of the hair dryer, which are not part of the claimed design.
No claim is made to the appearance of the circular area shown in FIG. 6 as surrounded by a dashed line with a second smaller dashed-line circle. This area, in the rear of the design, represents the location of a grill or ventilation for the hair dryer, for which proper detail cannot be shown at the scale of the drawing of FIG. 6.