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A few tips in case you want to try this out Apply 1–2 thin coats to the post and any metal that touches your earlobe, and let it dry completely. It wears/chips off, especially on the post as it slides through the piercing, so you’d need to reapply it. If you’re particularly sensitive to nickel, even a tiny exposed area can still cause itching, redness, or swelling. Don’t use it if the piercing is new, irritated, cracked, or infected.