The ornamental design for a dry shampoohairbrush, as shown and described.
FIG. 1 is a front view of the dry shampoo hair brush according to a first embodiment showing the new design;
FIG. 2 is an elevated front and side perspective view of the dry shampoo hair brush;
FIG. 3 is a top view of the dry shampoo hair brush;
FIG. 4 is a side view of the dry shampoo hair brush;
FIG. 5 is a bottom view of the dry shampoo hair brush;
FIG. 6 is a front view of the dry shampoo hair brush according to a second embodiment. The second embodiment having the same top appearance as shown in FIG. 3 and bottom appearance as shown in FIG. 5 as the first embodiment;
FIG. 7 is an elevated front and side perspective view of the dry shampoo hair brush; and,
FIG. 8 is a side view of the dry shampoo hair brush according to the second embodiment.