After each use of the Piercing Bump Treatment Oil, do I wash it off with water or leave it on?

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• I've been using your spray and oil for a week now, and my bumps keep getting bigger.
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• Will the Piercing Bump Treatment Oil still work even if the hole is closed?
• Can I apply your piercing bump treatment to a new piercing to aid in healing, even if I don't currently have a bump or keloid?