This makes me think of that boundary between the dead and living where the wind is unseen, just as a soul or a ghost could be believed to roam the earth. You see nothing but you can hear the wind, you can believe you hear the living dead. Its unnatural.

Seems to be describing makeup products, which could lead back to a theme of the unnatural. Trying to cover up the natural with something synthetic.

"Nothing" seems to be referred to as a noun in this stanza. Could that be unnatural?