I claim the ornamental design for a hairbrush with comb, as shown and described.
FIG. 1 is a left perspective view of a hairbrush with comb, showing my new design;
FIG. 2 is an enlarged rear perspective view thereof;
FIG. 3 is a reduced bottom plan view thereof;
FIG. 4 is a reduced top plan view thereof;
FIG. 5 is a reduced left-side elevational view thereof;
FIG. 6 is a reduced right-side elevational view thereof;
FIG. 7 is a reduced front elevational view thereof; and,
FIG. 8 is a reduced rear elevational view thereof.
The broken lines in FIGS. 1-3 showing alternative placements of a logo, which is understood to be superimposed on a continuous surface and not representative of any boundaries, illustrate environmental matter and form no part of the claimed design.