“In general, most people are not doing it in an ideal setting,” said Katie Koss (a.k.a. The Skin Witch), a licensed esthetician in Jacksonville, Florida. “You go into the bathroom in a rush, and your hands aren’t clean and you start going at it,” she said. “You run the risk of putting more bacteria into the skin. If you’re not pressing on it correctly, you can push it deeper into the skin, which can make it more infected or more swollen, and it can look worse than when you went into the bathroom, which has happened to me.”
Article source: https://www.huffpost.com/entry/how-to-pop-a-zit_l_6238bfc5e4b0d39357cb1229