62 citations
,
December 2008 in “Journal of structural biology” This study found that in naturally curved human scalp hairs, distinct arrangements of cell types on either side of the hair fiber contribute to its curvature.
95 citations
,
October 2007 in “International Journal of Dermatology” This study found that human hair can be classified into eight main types based on objective measurements of shape, rather than ethnic categories, enhancing the understanding of hair diversity globally.
95 citations
,
January 2007 in “Human biology” This study proposes a new, objective method to classify human hair into eight categories based on specific shape measurements, rather than traditional ethnicity-based classifications.
76 citations
,
December 2006 in “Journal of Dermatological Science” This study observed that Japanese women experience diffuse central hair loss after age 40, characterized by reduced hair density and thicker hair ratio rather than vellus-like hairs.
65 citations
,
May 2006 in “Journal of Structural Biology” This study concluded that the curliness of human hair, regardless of ethnicity, originates from the inhomogeneous internal nanostructure due to differences in the distribution of two types of cortices.
19 citations
,
September 2005 in “International Journal of Dermatology” African-American hair's curl pattern significantly affects its strength and elasticity.
46 citations
,
December 2003 in “Advances in neonatal care” This article reviews fetal scalp hair formation and related disorders but reports no new research results.
34 citations
,
August 2003 in “Clinical and Experimental Dermatology” This study found that hair diameter increases toward the scalp during pregnancy, a novel observation compared to the normal decrease seen in nonpregnant women.
203 citations
,
June 2003 in “Journal of the American Academy of Dermatology” This article reviews the structure and chemistry of hair across ethnicities and how these factors affect hair properties and treatment responses, but reports no new research findings.
34 citations
,
October 1982 in “Journal of applied polymer science” This study found that the moisture content of human hair significantly influences the type of fracture under tensile loading, with low or high humidity levels leading to smooth fractures and intermediate humidity resulting in step fractures.