FIG. 1 is a perspective view of a first embodiment of a hair treatment applicator showing our new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a perspective view of a second embodiment of the hair treatment applicator;

FIG. 7 is a side elevational view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a front elevational view thereof; and,

FIG. 10 is a bottom plan view thereof.

The broken lines shown in the drawing disclosure are for illustrative purposes only and form no part of the claimed design.