What can be used for a sore nostril?

For a sore nostril, you can use saline nasal sprays or rinses to help moisturize and clear any irritants. Applying a thin layer of petroleum jelly or a soothing balm can also provide relief and prevent further irritation. Additionally, staying hydrated and using a humidifier can help keep nasal passages moist. If soreness persists, consulting a healthcare professional is recommended.