Is a nasal ointment suitable for a 1-month-old baby whose nasal mucosa is irritated by the Sainte Justine nasal flush method?

Yes, it is safe to apply Vaseline™ on the outside of a baby's nostrils to help with nasal irritation caused by nasal flushing. However, it is important to avoid putting Vaseline™ inside the nostrils. Instead, you can simply reduce the frequency of nasal rinsing with a saline solution.