96 citations
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February 2002 in “Journal of the American Academy of Dermatology” Pseudofolliculitis barbae is a chronic skin condition affecting mainly African American and Hispanic individuals, caused by shaving tightly curled hair, and managed by prevention and treatment but not curable.
21 citations
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June 2023 in “Proceedings of the National Academy of Sciences” Tightly curled scalp hair helps reduce heat from the sun, protecting against overheating.
97 citations
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March 2010 in “The American Journal of Human Genetics” A mutation in the KRT74 gene causes tightly curled hair.
29 citations
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July 2015 in “Journal of Medical Genetics” A genetic variant in the KRT25 gene causes tightly curled hair.
78 citations
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May 2012 in “Journal of Investigative Dermatology” A specific gene mutation causes woolly hair and hair loss.