This study examined hair classification based on geo-racial origin, observing that Caucasian and Mediterranean hair differs morphologically from African or Asian hair, with differences in density, thickness, and fiber shape contributing to varied hair characteristics such as color and curliness.
February 2024 in “Medicina” In this study, researchers used atomic force microscopy to capture and analyze morphological changes in the surface of healthy hair, identifying features such as pitting and rod-shaped macro-fibrillar elements, which could inform future research on hair conditions and care.
177 citations
,
June 1991 in “The Journal of Clinical Endocrinology & Metabolism” This study found that caucasian subjects had higher serum levels of 5 alpha-reduced androgen metabolites compared to Chinese subjects, suggesting racial differences in 5 alpha-reductase activity and a potential mechanism for increased body hair in caucasian men.
28 citations
,
April 2013 in “Fertility and Sterility” This study found that Caucasian and Asian women with PCOS in the San Francisco Bay Area had a similar prevalence of androgen excess, including hirsutism, across most measures.
24 citations
,
December 2011 in “Journal of The American Academy of Dermatology” This study found that Caucasian female hair is denser than Asian female hair in the occipital region regardless of treatment but thinner in diameter in both the frontal and occipital regions.