You know what, I think blackheads can do that. There is like a bottom part to the top part which is hard and dark (which I read was the other stuff just turned dark due to air). Here's a slide show of acne, yay! Ha. But it might help. https://www.webmd.com/skin-problems-and-treatments/acne/ss/slideshow-acne-dictionary One thing that I have read is that picking them while tempting isn't the actual best thing to do. What kind of cleaner do you use? We got an astringent for my son and it is clearing his skin up tremendously.