A 2011 study indicated that increased nasal hair density decreases the development of asthma in those who have allergic rhinitis, possibly due to an increased trapping capacity to filter out pollen and other common allergens.[2]
Removal
A number of devices have been sold to trim nasal hair, including miniature rotary clippers and attachments for electric shavers. The trimmers shorten the hair to such lengths that they do not appear outside of the nasal passage. A pair of tweezers may also be used to facilitate the removal of such hairs. Other means are in effect such as waxing, laser hair removal, and electrolysis.
References
^Blume-Peytavi, Ulrike; Whiting, David A.; Trüeb, Ralph M. (2008). Hair Growth and Disorders. Berlin: Springer. p. 10. ISBN978-3540469087.
^Ozturk, A.B.; Damadoglu, E.; Karakaya, G.; Kalyoncu, A.F. (2011). "Does Nasal Hair (Vibrissae) Density Affect the Risk of Developing Asthma in Patients with Seasonal Rhinitis?". International Archives of Allergy and Immunology. 156 (1): 75–80. doi:10.1159/000321912. PMID21447962. S2CID9919920.