Because each person is different, an exact amount of time to leave a nose ring out cannot be stated. The ring can be taken out if the piercing has fully healed, but the hole should be tested for closure consistently if left out for multiple days at a time.
To prevent closure while the ring is out, retainers are available that maintain the hole's integrity. During the healing period, the hole can close within 24 hours. Nose piercings can take up to 8 months to heal fully depending on the area pierced. Healing occurs faster when the piercing is properly cared for through hygiene and avoiding trauma to the piercing.