Hair Straightener

FIG. 1 is a front elevation view of a hair straightener showing the new design;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a back perspective view thereof; and,

FIG. 8 is a back perspective view thereof, shown in an open position of use.

The broken lines depict portions of the hair straightener that form no part of the claimed design.