There are two common causes of nasal congestion and invisible boogers in newborns: first, the baby’s nasal congestion is due to some triggers such as catching cold to make the nasal mucosa congested and swollen, blocking the nasal passage. At this time, you can give your baby a localized hot compress for the nose, while paying attention to the overall environment temperature not too low. In addition, according to the ambient temperature to the baby with a thin and appropriate thickness of a small hat, is to protect the fontanelle to avoid getting cold. So in order to solve this kind of nasal congestion, you can adults quickly rub your hands hot, with the palm of your hand to cover the baby’s fontanel, can also relieve this kind of nasal congestion. The second, baby nasal congestion but can not see the boogers, it is likely that there is actually some secretions in the nose, but the secretions are not a lot, not in the form of clear water, do not flow out, we can not see a runny nose. But a small amount of secretion can be stored in the deep nasal cavity, too long in a sticky state, so that the postnasal cavity will be blocked, the baby will have nasal congestion. In this case, you can use a towel with warm water to wash your face and nose for a while when you take a bath and wash your face. This has a good local hot compress and moistening effect on the nasal cavity, which is conducive to the discharge of nasal secretions. You can also use a physiological sea salt water sprayer to help your baby spray the nose to help the discharge of the sticky secretions inside.