Does it affect/improve sensitivity? Personal experience says no, but for many women, whose piercings have healed nicely, their nipple sensitivity increased dramatically. … Of course, you have to live with the fact that your nipples will be out of action while they heal.
Moreover, does your nipple stay hard when you get it pierced?
Nipple Erection/Hardness
You might have heard stories about nipples staying hard once they‘re pierced, but this doesn’t always happen. They may stay erect for a while, but once your body gets used to the piercings, your nipples will more than likely relax.