113 citations
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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.
2 citations
,
November 1995 in “American Journal of Obstetrics and Gynecology” Taking vitamin B6 corrected a pregnant woman's metabolic disorder, which changed her hair color.
Hair turning darker can be a sign of skin cancer.
November 2022 in “Journal of Investigative Dermatology” Blocking mTORC1 activity could increase hair pigmentation and potentially reverse greying.
7 citations
,
May 2018 in “Curēus” Bimatoprost 0.03% solution effectively promotes eyebrow growth.
February 2025 in “JEADV Clinical Practice” A rare autoimmune disease caused the woman's scalp blisters and hair loss, successfully treated with medication.
15 citations
,
August 2014 in “Journal of dermatological science” Pueraria thunbergiana extract may help prevent hair from turning gray.
April 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Scientists discovered a new way UVB light increases skin pigmentation through the ATP-P2X7 pathway.
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.
8 citations
,
September 1981 in “Zentralblatt für Veterinärmedizin Reihe A” Biotin deficiency in pigs causes hair loss, skin issues, and weak claws.
8 citations
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March 2005 in “JDDG Journal der Deutschen Dermatologischen Gesellschaft” Bimatoprost eye drops can cause temporary eyelid changes and may help with hair growth research.
January 2008 in “Linchuang pifuke zazhi” Betamethasone activates and increases the growth of certain skin cells from hair follicles.
26 citations
,
August 2007 in “Annals of Anatomy - Anatomischer Anzeiger” Feathers become harder as they develop due to a change in keratin type.
September 2019 in “Journal of Investigative Dermatology” PCE-DP brightens skin and promotes hair growth by enhancing cell growth and reducing melanin uptake.
7 citations
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December 1956 in “Science” 1 citations
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December 1956 in “Science” October 2022 in “Hair Transplantation” Eyebrow transplantation is very challenging due to the precise grafting needed.
24 citations
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May 2022 in “Frontiers in Endocrinology” Activating brown fat may help manage PCOS symptoms.
The gene Endothelin 3 makes mice's fur darker by increasing pigment cells and pigment levels.
July 2024 in “Medical alphabet” Premature graying and hair changes can be treated with certain peptides and possibly targeting the endocannabinoid system.
1 citations
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July 2018 in “JAMA dermatology” Poliosis causes white hair patches due to lack of melanin.
January 1990 in “Springer eBooks” Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.
June 2021 in “Asian Journal of Medical Sciences” Vitamin B12 deficiency can cause reversible skin darkening.
8 citations
,
August 2018 in “BMJ Case Reports” Pazopanib treatment caused rapid hair color loss, possibly indicating its effectiveness.
1 citations
,
June 2011 in “InTech eBooks” Darker skin provides more protection against UV damage and cancer.
5 citations
,
April 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” Stopping shaving or removing hair follicles usually resolves Pseudofolliculitis barbae.
4 citations
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June 2015 in “Connective tissue research” The research found changes in gene expression related to cell death in mouse skin that help understand hair follicle development and skin health.
8 citations
,
August 1993 in “Colloid & Polymer Science” The observed "toughening" in keratin was actually due to water evaporation, not a real change in keratin.
2 citations
,
May 2019 in “International Journal of Molecular Sciences” Tranexamic acid turns white hair brown in certain mice by affecting specific proteins.
December 2025 in “Dermatological Health” Using eyebrow powder caused eyebrow hair loss, but stopping its use led to regrowth.