Why are surface piercings rare?
Many piercers are not comfortable doing surface piercings because they are difficult to heal, and most of them reject. Rejection means that the body slowly (or sometimes quickly) pushes them out through the skin, in the same way that the body pushes out a buried splinter. A surface piercing will only heal if it is easier for your body to keep the piercing in than it is to reject it. Since your body is designed to reject foreign objects, a little common sense makes it clear that it’s not easy to keep a surface piercing.
