January 2026 in “Frontiers in Reproductive Health” Educational efforts can reduce harmful chemical exposure from hair products in pregnant Women of Color.
36 citations
,
September 2015 in “Forensic Science International: Genetics” Certain DNA variants can predict straight hair in Europeans but are not highly specific.
February 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” Tandem repeats significantly influence hair color, especially darker shades, across different ancestries.
June 2023 in “Animal Bioscience” Vimentin and transthyretin proteins are linked to black coat color in sheep.
44 citations
,
April 2017 in “Genes & development” Scientists found cells in hair that are key for growth and color.
28 citations
,
May 2017 in “Molecular ecology” Researchers found genes that control hair color and growth change before the visible coat color changes in snowshoe hares.
8 citations
,
November 2022 in “International Journal of Cosmetic Science” Human hair varies widely and should be classified by curl type rather than race.
2 citations
,
June 2013 in “Lasers in surgery and medicine” The hot-wire hair removal device is no better than shaving.
4 citations
,
July 2022 in “Scientific reports” Crossbreeding improves goat fiber quality, and specific genes affect hair traits and color.
20 citations
,
September 2021 in “Nature communications” Cat color patterns are determined early in development by gene expression and epidermal changes, with the Dickkopf 4 gene playing a crucial role.
October 2025 in “Journal of Veterinary Diagnostic Investigation” Black hair in cats has higher cortisol levels than white hair.
70 citations
,
June 2010 in “Clinics in Dermatology” Certain groups may need vitamin supplements to improve hair health and prevent other health problems.
April 2025 in “Health Science Reports” Smoking and lighter hair color increase alopecia risk, especially in women and those over 25.
November 2025 in “Stem Cell Research & Therapy” Human hair follicle cells can help regenerate hair and reduce inflammation, aiding in hair loss treatment.
Hair can accurately predict iron levels in cattle muscle, helping diagnose mineral imbalances.
133 citations
,
February 2017 in “PLoS Genetics” Genetic factors can help predict male pattern baldness risk.
113 citations
,
March 2018 in “Biological reviews/Biological reviews of the Cambridge Philosophical Society” Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.
September 2023 in “Scientific reports” Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.
July 2022 in “Research Square (Research Square)” Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
75 citations
,
January 1995 in “American journal of primatology” Vervet monkeys show physical changes like hair loss and scrotal color changes due to stress or nutrition issues.
37 citations
,
August 2020 in “BMC Genomics” Hair greying is mainly influenced by age, with genetics playing a smaller role.
18 citations
,
January 2020 in “Ecology and evolution” Genes related to pigmentation, body rhythms, and behavior change during hares' seasonal coat color transition, with a common genetic mechanism in two hare species.
October 2024 in “Journal of Cosmetic Dermatology” Over half of young people in Saudi Arabia experience early gray hair, linked to factors like smoking, stress, and family history.
4 citations
,
December 2021 in “Electronics” The new method predicts post-hair transplant images more accurately than other methods.
November 2023 in “Biology” N6-methyladenosine affects hair follicle development differently in Rex and Hycole rabbits.
73 citations
,
December 2015 in “Nature Genetics” Mutations in TBX3 cause horses to have more even hair color instead of Dun camouflage.
November 2025 in “Veterinary and Animal Science” Camel hair structure, not color, helps camels stay cool in the desert.
1 citations
,
January 2024 in “Annals of Dermatology” Examining hair shape can help predict Alopecia Areata's progression.
July 2021 in “Indian journal of dermatopathology and diagnostic dermatology” Trichoscopy is a reliable method for diagnosing hair and scalp disorders quickly and non-invasively.
May 2026 in “Preprints.org” Dark-coated cats are more stressed, and adoption reduces stress in cats.