Boogers mostly contain nasal mucus, or snot. As the mucus dries, it turns into a hardened booger. Share on Pinterest At some point, we’ve all had a booger dangling from our nose or quickly grabbed for ...

Mucus in the nose helps trap germs and other particles to prevent them from entering the body. When mucus, germs, and particles dry out, it forms a booger in the nose. Removing it can be risky. Nose ...