66 citations
,
September 2005 in “Photochemical & photobiological sciences” We don't fully understand how sunlight damages different types of hair.
February 2012 in “Clinical and Experimental Dermatology” Many adult women experience unexplained excessive hair shedding, often starting before age 40.
21 citations
,
October 2007 in “Australasian Journal of Dermatology” A woman with hair loss regrew white hair after taking prednisolone.
2 citations
,
March 2004 in “Journal of the American Academy of Dermatology” The 60-second timed hair count is a reliable and simple way to measure hair shedding at home, showing older women tend to shed more hair than younger women.
1 citations
,
November 2022 in “DOAJ (DOAJ: Directory of Open Access Journals)” Male and female human hairs have different microscopic structures that can help in forensic analysis.
11 citations
,
April 2020 in “Animals” Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.
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.
July 1993 in “Journal of Radioanalytical and Nuclear Chemistry” Mouse hair element patterns vary, making it unreliable for tracking time.
Ceramide may help delay hair aging by restoring stressed hair cells.
58 citations
,
April 2009 in “Dermatologic Surgery” Most women have a widow's peak and specific hairline features useful for designing hair restoration surgery.
5 citations
,
January 2007 in “Immunopharmacology and Immunotoxicology” 17β-Estradiol boosts allergic reactions and slows thymus aging in mice.
1 citations
,
September 2024 in “Veterinary Dermatology” Trichography is important for diagnosing hair fragility in Pomeranian dogs with hair cycle issues.
7 citations
,
November 2022 in “International Journal of Molecular Sciences” As Japanese males age, their hair darkens due to increased melanin, with males generally having darker hair than females.
33 citations
,
March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
1 citations
,
January 1971 Hormones, especially androgens, affect hair growth and can cause hair loss or excess hair in both men and women.
3 citations
,
March 2009 in “Hirosaki University Repository for Academic Resources (Hirosaki University)” Hirosaki hairless rats have sparse, twisted hair due to missing hair keratin genes.
November 2025 in “Archaeometry” Animal hair from 18th-century Mazamet burial sites shows locals used goat, badger, cow, or horse fur for clothing, indicating modest economic status.
2 citations
,
January 2010
47 citations
,
January 2013 in “Indian Journal of Dermatology, Venereology and Leprology” Premature graying of hair may suggest health issues and currently lacks effective treatments.
16 citations
,
January 2015 in “Forensic science international” The hair of two ancient Chilean mummies is well-preserved and contains high levels of heavy metals.
7 citations
,
June 1967 in “Journal of Investigative Dermatology” Plucking hairs in a certain way can result in intact hair roots, not related to baldness.
January 2025 in “SSRN Electronic Journal” 178 citations
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June 1994 in “Journal of Investigative Dermatology” Alopecia areata in these mice is inherited, more common in young females, and can be treated with triamcinolone acetonide.
2 citations
,
December 2025 in “Cosmetics” Proper scalp care can improve hair health and delay ageing signs.
11 citations
,
January 2016 in “Mycoses” Human black hair is best for distinguishing between T. mentagrophytes and T. verrucosum.
157 citations
,
April 1994 in “Clinical endocrinology” Androgens can cause hair growth in some areas and hair loss on the scalp.
February 2026 in “American Scientific Research Journal for Engineering, Technology, and Sciences (Global Society of Scientific Research and Researchers)” Gray hair requires special coloring techniques and care to maintain quality and strength.
January 2006 in “Yearbook of Dermatology and Dermatologic Surgery” Hair graying is caused by the loss of pigment cells due to poor maintenance of stem cells in the hair follicle.
February 1999 in “The anatomical record” Two mouse mutants have defective hair cuticle cross-linking.
January 2015 in “Springer eBooks” Understanding hair structure and growth is key for diagnosing hair diseases accurately.