Lortscher says to resist all temptation to pop a pimple when it first appears. This can be hard, because we assume that popping it means eradicating all the gunk, and that this expedites healing. Wrong: “When you pop a zit, the gunk inside can make its way to the skin’s surface and irritate your skin,” he says. “This leads to even more pimples nearby. Plus, you run the risk of driving debris and bacteria even deeper into your skin, which can lead to scarring and worsen breakouts.”