4 citations
,
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.
MITF and WNT3A are key in Dun Mongolian horse pigmentation.
November 2025 in “Journal of Investigative Dermatology” Dark skin has stronger barriers and structure due to specific gene activity.
29 citations
,
May 2023 in “Cell” 40 citations
,
November 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Different melanocyte types in hair follicles either survive or die during the catagen phase.
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.
June 2021 in “Asian Journal of Medical Sciences” Vitamin B12 deficiency can cause reversible skin darkening.
The FOS gene helps hair growth in Tan sheep.
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.
November 2014 in “Springer eBooks” Using a patient's own tissue for browlifting can improve both the position and fullness of the brow for a longer-lasting rejuvenation.
2 citations
,
October 2016 in “Nutrition in clinical practice” Vitamin B12 deficiency can cause facial dark spots that go away with treatment.
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.
1 citations
,
January 2014 in “Elsevier eBooks” Melanocytes produce melanin; their defects cause vitiligo and hair graying, with treatments available for vitiligo.
September 2019 in “Journal of Investigative Dermatology” PCE-DP brightens skin and promotes hair growth by enhancing cell growth and reducing melanin uptake.
Hair turning darker can be a sign of skin cancer.
3 citations
,
January 2015 in “Indian journal of burns” The document discusses how to restore hair in areas like eyebrows, eyelashes, moustache, beard and scalp after burns.
38 citations
,
February 2002 in “British journal of dermatology/British journal of dermatology, Supplement” Two patients with porphyria cutanea tarda experienced their grey hair turning dark again.
7 citations
,
March 2019 in “Dermatologic surgery” Bimatoprost 0.01% effectively and safely improves eyebrow growth.
October 2022 in “Hair Transplantation” Eyebrow transplantation is very challenging due to the precise grafting needed.
July 2024 in “Medical alphabet” Premature graying and hair changes can be treated with certain peptides and possibly targeting the endocannabinoid system.
1 citations
,
June 2011 in “InTech eBooks” Darker skin provides more protection against UV damage and cancer.
6 citations
,
October 2019 in “Jo'jig gonghag gwa jaesaeng uihag/Tissue engineering and regenerative medicine” Rice bran extract boosts melanin production in hair follicles.
68 citations
,
April 1965 in “General and Comparative Endocrinology” The pituitary gland controls seasonal fur color changes in weasels.
5 citations
,
April 2019 in “DOAJ (DOAJ: Directory of Open Access Journals)” Stopping shaving or removing hair follicles usually resolves Pseudofolliculitis barbae.
1 citations
,
December 2019 in “Clinical ophthalmology” Bimatoprost eye drops make rabbit eyelashes longer, thicker, and darker, and increase the number of lashes without causing inflammation.
12 citations
,
February 2019 in “Skin research and technology” White hair has less lipid content and absorbs water differently than brown hair.
2 citations
,
September 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Self-perceived facial aging is linked to skin pigmentation, immune system, hair loss in men, and genes related to the skin's structure.
26 citations
,
August 2007 in “Annals of Anatomy - Anatomischer Anzeiger” Feathers become harder as they develop due to a change in keratin type.