Things You'll Need
Nostril screws, also known as nose screws, are one of two kinds of jewelry most often worn in nostril piercings, the other being a captive bead ring. The first time you attempt to change your nostril screw, it can be a bit confusing, since the jewelry is specific to nose piercings. The part of the nostril screw that sits inside your nose is curved into either a "U" or an "L" shape, depending on the length of the bar. There is no back on a nostril screw; the curve holds it in place.
Wash your hands with antibacterial soap, rinse them, and then wash your piercing with more antibacterial soap. Work the soap into a lather in your hands, then use your fingertips to massage the lather onto your nose. Splash your face with water to rinse off the soap. Dry your skin with a paper towel.
Grasp the bead on the outside of the nostril screw between your thumb and forefinger. Pull outward and downward at the same time until you see the bend in the nostril screw come through the outside of the piercing.
Twist the nostril screw away from your face while continuing to pull downward. The jewelry will "unscrew" from the piercing and come out.
Squirt a tiny drop of antibacterial soap onto a paper towel and dip the end of the new nostril screw into the soap to lubricate it.
Insert the lubricated end of the new nostril screw into your piercing from the outside and twist it toward your face until the curve is inside your nose and the bead is flush against your skin.