FIG. 1 is a front view of a leg for a chair for hair washing in accordance with my new design; FIG. 2 is a back view thereof; FIG. 3 is a right side view thereof, the left side view being a mirror image thereof; FIG. 4 is a top view thereof; FIG. 5 is a bottom view thereof; FIG. 6 is a front perspective view thereof; and, FIG. 7 is a back perspective view thereof.