FIG. 1 shows a first embodiment of a dual-chamber cosmetic bottle of the present invention.

FIG. 2 shows a front elevation view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 3 shows a back elevation view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 4 shows a top view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 5 shows a bottom view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 6 shows a right side elevation view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 7 shows a left side elevation view of the first embodiment of the dual-chamber cosmetic bottle shown in FIG. 1.

FIG. 8 shows a second embodiment of a dual-chamber cosmetic bottle of the present invention.

FIG. 9 shows a front elevation view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8.

FIG. 10 shows a back elevation view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8.

FIG. 11 shows a top view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8.

FIG. 12 shows a bottom view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8.

FIG. 13 shows a right side elevation view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8; and,

FIG. 14 shows a left side elevation view of the second embodiment of the dual-chamber cosmetic bottle shown in FIG. 8.

The broken lines are for illustration purposes only of a closure for the bottle, and form no part of the claimed design.