i dunno, i just don't like the sort of haphazard way the dropper does things. i spread the liquid out with my fingers, of course, but i feel like it never gets spread consistently to the right areas.
i imagine a spray bottle used like so: part your hair, expose the scalp, and shoot the spray bottle POINT BLANK at the scalp, THEN rub it in.
it just seems like a more efficient applicaton than the big ol' DROP.
I think it spreads out on your scalp by itself. It's a liquid -- it's not like it's going to sit somewhere in a pile. I just let it come out of the dropper all over my scalp and let it run where it wants to, don't even rub it in. It won't do me much good on the tips of my fingers.