Cosmetic Brush

FIG. 1 is a perspective view of a cosmetic brush. FIG. 2 is a front view thereof. FIG. 3 is a back view thereof. FIG. 4 is a first side view thereof. FIG. 5 is a second side view thereof. FIG. 6 is a top view thereof; and, FIG. 7 is a bottom view thereof. In the drawings, the broken lines are for the purpose of illustrating portions of the cosmetic brush that form no part of the claimed design.