August 2020 in “Textile research journal” This study introduces a modular fiber model to investigate how changes in microstructural properties of wool affect its critical buckling load, highlighting potential uses and areas needing further research in wool fiber biophysics.
21 citations
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July 2010 in “International Journal of Cosmetic Science” This study found that hair luster decreases with age in Japanese females, primarily due to an irregular increase in fiber curvature which affects hair alignment.
10 citations
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June 2019 in “Cosmetics” This study observed that individuals with mixed ethnicity had hair that varied widely in shape and showed significant surface damage near the root, differing from monoracial hair characteristics.
2 citations
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December 2025 in “Cosmetics” This review reports on the effects of aging on hair characteristics such as pigmentation, growth, and structural properties across genders and ethnicities, highlighting the importance of scalp health and suggesting cosmetic solutions to improve the appearance of aged hair.
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.