There may be exercises you can do to tone the muscles in your face
. Sometimes toning is what it takes, rather than actually losing weight
in one spot. As was noted above, you can't spot reduce.
I'd suggest that you do a search for "facial exercises" or something like that and see what you come up with. I'm sure there a plenty that you can either download or watch/do while online. Once you learn the exercises, you can pretty much do them any place.