8 citations
,
February 2005 in “British Journal of Haematology” Chemotherapy caused the patient's hair to have alternating thick and thin segments.
Hair feels different when touched and rubs together in various ways.
April 2020 in “International Journal of Cosmetic Science” The study found that minor protein differences between curved and straight Japanese hair are unlikely to significantly affect hair structure.
2 citations
,
August 2019 in “International Journal of Cosmetic Science” Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.
158 citations
,
November 1998 in “Cell” β-catenin affects hair growth and can lead to tumors, needing more research for better understanding.
47 citations
,
July 1997 in “British Journal of Dermatology” The inner root sheath is crucial for hair follicle stability during the transition from growth to involution.
12 citations
,
March 2004 in “Journal of Investigative Dermatology” 31 citations
,
September 1996 in “Differentiation” The upper dermal sheath can regenerate hair in rats.
January 2026 in “International Journal of Dermatology” APKH in young males may signal early hair loss and needs early attention.
27 citations
,
March 2018 in “Journal of Experimental Biology” Wool fibre curvature is due to longer orthocortical cells compared to paracortical cells.
9 citations
,
June 2008 in “Springer eBooks” Understanding hair follicle structure is key for treating hair disorders and could help develop new treatments.
September 1972 in “大会学術講演梗概集. 構造系” The document explains common hair disorders and the basics of hair anatomy and life cycle.
19 citations
,
January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
87 citations
,
July 2009 in “The journal of investigative dermatology/Journal of investigative dermatology” Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.
10 citations
,
November 1997 in “British Journal of Dermatology” A 10-year-old boy had the earliest reported case of hair that became progressively kinkier but eventually returned to normal on its own.
January 2021 in “Advanced Biomedical Engineering” Needle shape affects the force needed for hair implants, with certain shapes reducing the effort required.
June 2023 in “JAAD case reports” The document concludes that "hot comb alopecia" is now called "central cicatricial centrifugal alopecia" and its causes are complex.
July 2025 in “Journal of the American Academy of Dermatology” Hair diameter diversity helps assess hair loss, but its standard measure varies by individual and ethnicity.
24 citations
,
November 2015 in “Scientific reports” Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.
23 citations
,
July 1997 in “British Journal of Dermatology” The inner root sheath is vital for hair follicle stability during growth changes.
July 2023 in “GLOBAL JOURNAL FOR RESEARCH ANALYSIS” The new treatment showed promise in managing eyebrow hair loss.
January 2023 in “SKIN The Journal of Cutaneous Medicine”
40 citations
,
June 2013 in “Biomaterials” Scientists created 3D hair-like structures that could help study hair growth and test treatments.
264 citations
,
October 1958 in “Archives of Dermatology” A 4-year-old girl has a rare hair condition causing fragile, short hair.
January 2016 in “프로그램북(구 초록집)” Hormones and neuropeptides affect hair growth, with androgens having opposite effects on beard and scalp hair.
32 citations
,
March 2016 in “American Journal of Physical Anthropology” African hair is curled, Asian hair is thick, European hair is lighter, and chemical methods help identify hair color differences.
1 citations
,
July 2010 in “Dermatologic Surgery” Splitting one hair follicle into two can help regrow hair with a 50% to 70% success rate, useful when donor hair is limited.