October 1890 in “Science” Pilocarpin can cause hair regrowth and color change in some cases but not in others, and it may have side effects in animals.
April 2018 in “Journal of Investigative Dermatology” The research found that a specific skin cell type not only triggers hair growth but also controls hair color, and that aging can lead to hair loss and color changes.
February 2024 in “Genes to Cells” Losing molars in young mice causes premature gray hair between the eyebrows.
12 citations
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March 2018 in “Australasian Journal of Dermatology” Minoxidil treatment can reduce hair shedding, increase hair volume, and even change hair color in patients with loose anagen hair syndrome.
2 citations
,
July 2016 in “Veterinary dermatology” Hyperaesthetic leucotrichia in horses causes painful, recurring skin lesions and hair color changes, especially in Arabian and American paint horses.
5 citations
,
May 2021 in “Small ruminant research” The study found specific proteins that could mark different growth stages of cashmere goat hair and may help improve cashmere production.
March 2026 in “Journal of Investigative Dermatology” 73 citations
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December 2015 in “Nature Genetics” Mutations in TBX3 cause horses to have more even hair color instead of Dun camouflage.
January 2005 in “Veterinarski glasnik” The dog's hair discoloration was due to low zinc and hypothyroidism, not the medication.
September 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Non-invasive methods can effectively monitor hair growth cycles, aiding hair loss treatment development.
103 citations
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March 2011 in “PLoS Biology” Birds can lose neck feathers due to a genetic change that increases a gene's activity, helping them adapt to heat.
20 citations
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January 2015 in “Current problems in dermatology” Graying hair happens due to aging and might be delayed by new treatments.
5 citations
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October 2021 in “Vlaams Diergeneeskundig Tijdschrift” The protocol is easy to use, but reliable results need the same person to assess each time.
5 citations
,
January 1979 in “Archives of Dermatological Research”
60 citations
,
October 2010 in “Molecular Imaging and Biology” Increased skin pigmentation in mice reduces bioluminescent signal accuracy.
2 citations
,
December 2024 in “BMC Genomics” Key genes and pathways control sheep hair growth phases.
118 citations
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October 2014 in “Journal of Dairy Science” Tail switch hair is best for measuring cortisol in Holstein cows, with white hair and multiparous cows showing higher levels.
January 1957 in “Nihon Chikusan Gakkaiho” Rabbit hair color is influenced by the shape and distribution of pigment granules.
October 2024 in “Rapid Communications in Mass Spectrometry” Sika deer shoulder hair is good for analysis.
July 1993 in “Journal of Radioanalytical and Nuclear Chemistry” Mouse hair element patterns vary, making it unreliable for tracking time.
January 2008 in “Pratique médicale & chirurgicale de l'animal de compagnie” Alopecia X in dogs is a cosmetic issue, not a hormonal disorder, and harmful treatments should be avoided.
10 citations
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August 2023 in “Animals” SLC45A2 and GPNMB genes help control chicken feather color by promoting melanin.
8 citations
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February 1968 in “Australian Journal of Zoology” The southern elephant seal's skin layer helps waterproof the skin by being tightly connected to hair shafts.
January 2025 in “Open Veterinary Journal” Supplements improved the dog's hair growth without side effects.
March 2011 in “Pigment Cell & Melanoma Research” The Agouti gene influences pigmentation and may have a developmental role in deer mice.
2 citations
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May 2019 in “International Journal of Molecular Sciences” Tranexamic acid turns white hair brown in certain mice by affecting specific proteins.
4 citations
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August 2023 in “Nature Communications” Mouse zigzag hair bends form due to a 3-day cycle of changes in hair progenitors and their environment.
11 citations
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January 1977 in “Archives of dermatological research” Mouse tail skin has different keratinization near hair follicles and scales.
18 citations
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April 1989 in “Archives of Dermatology” Iron deficiency can cause hair color changes, which can be reversed with iron supplements.