How do you treat a pimple by a nose piercing?

It could also be hypertrophic scarring. Either way, just use tea tree oil on it. After you clean you piercing, dab a little bit of tea tree oil on the bump and leave it. Don't wipe it or dilute the oil. Once a day is usually enough. The tto dries out the bump and it'll flake off in layers until it's gone. It could take days, weeks or months but if you caught it while it's new and small, it should dry up quickly. You can find TTO just about anywhere bc its commonly used to treat pimples.