January 2016 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” This research suggests that geometric classification of hair into fewer groups may be more reliable and useful for studying hair characteristics, rather than racial descriptions, especially in medical and forensic applications.
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January 2002 in “PubMed” This study introduces a new test using a pendulum device to assess the bending stiffness of hair fibers, which can evaluate the effects of different hair treatments.
September 2026 in “Journal of Cosmetic Dermatology” This study developed a geometric framework for estimating safe donor harvesting in hair transplants, showing that individual hair characteristics like caliber and length significantly affect donor capacity.
June 2026 in “YAKUGAKU ZASSHI” This study investigated the impact of container-tip design and hair density on the scalp delivery of minoxidil in topical formulations, finding that higher hair density reduced delivery, particularly with larger tip containers, indicating the importance of these factors in product design.
November 2024 in “Journal of Microscopy” This study found that micro-computed tomography (micro-CT) was highly effective for analyzing the cross-sectional geometry of hair fibres, including the medulla in highly curled hair, but less effective than scanning electron microscopy for surface details.
