FIG. 1 is a front, left, top perspective view of a hair dryer showing my new design;
FIG. 2 is a back, right, bottom perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left view thereof;
FIG. 6 is a right view thereof;
FIG. 7 is an enlarged top view thereof;
FIG. 8 is an enlarged bottom view thereof;
FIG. 9 is an enlarged view of the encircled area 9 of FIG. 1; and,
FIG. 10 is an enlarged view of the encircled area 10 of FIG. 5.
The broken lines shown on the drawings depict portions of the hair dryer that form no part of the claimed design. In FIGS. 1, 5, 9 and 10, the broken lines depict the enlarged view boundaries that do not form part of the claimed design.