Nasal hair, also known as nose hair, is a type of hair that grows inside the nose. It is made up of coarse, curly hairs that trap dust, pollen, and other particles from entering the lungs.
Nasal hair is important because it helps to protect the lungs from infection. It also helps to keep the nasal passages moist and prevents them from becoming dry and irritated. In addition, nasal hair can help to improve the sense of smell by trapping odor molecules and directing them to the olfactory receptors in the nose.