I bought this spray on the recommendation of Dr. Larib and I didn't know anything special about it. The only thing was that it works for acne. When I ordered it, I used it for two or three days. My skin barrier was damaged, so it irritated my nose. After that, when I introduced it into my routine regularly, day and night, my skin is fine. Acne is completely gone. I have been using it for a month now. There is no irritation. It will calm your acne effectively.