7 citations
,
March 2003 in “PubMed” The scalp has a natural speckled pattern of increased pigment around hair follicles, possibly linked to local hormone production.
12 citations
,
May 2019 in “Journal of cosmetic dermatology” Effective treatments for premature hair graying still require significant research.
June 2025 in “BMJ Case Reports” Axitinib treatment turned a man's grey hair back to black.
April 2026 in “bioRxiv (Cold Spring Harbor Laboratory)” The Lanyu pig's hair follicles are similar to human ones, making it useful for studying skin healing.
Polarized microscopy helps identify hair irregularities in genetic disorders.
2 citations
,
September 2020 in “International journal of radiology & radiation therapy” Radiotherapy can cause rare changes in hair color, which should be discussed with patients.
May 2026 in “Clinical Cosmetic and Investigational Dermatology” White hair can make the scalp look more visible, which may be mistaken for hair loss.
4 citations
,
January 2019 in “Micron” Fetal hair follicles have melanocytes with melanosomes at different stages, which are broken down into pigment particles in keratinocytes.
November 2022 in “Skin Appendage Disorders” PT-20 did not significantly improve gray hair repigmentation.
3 citations
,
May 2010 in “Archives of dermatology” Herpes zoster infection can cause permanent hair color change in the affected area.
September 2016 in “European Journal of Pediatric Dermatology/PD. European journal of pediatric dermatology” Ulerythema ophryogenes causes hair thinning and inflammation, with limited treatment options.
January 1957 in “Nihon Chikusan Gakkaiho” Rabbit hair color is influenced by the shape and distribution of pigment granules.
39 citations
,
March 2017 in “Dermatologic clinics” UV light can help stimulate the growth of new pigment cells from hair follicles in people with vitiligo.
January 2024 in “Grail of science” Premature hair graying is caused by various factors and mechanisms.
118 citations
,
January 1992 in “Experientia” 5 citations
,
April 1946 in “PubMed” Liver extract treatment improved anemia and hair growth in a pig.
25 citations
,
December 2008 in “Journal of Dermatological Case Reports” Skin color may change how alopecia areata looks under a dermoscope.
33 citations
,
September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
11 citations
,
July 2008 in “International Journal of Dermatology” Greying hairs may be protected from alopecia areata.
Gray hair affects hair's movement and appearance, making it less bouncy and more wavy.
January 2005 in “Chinese Journal of Veterinary” Hairless mice lose hair by 3-4 weeks, develop thicker, folded skin, and show pigmentation differences.
2 citations
,
June 2009 in “Journal of the American Academy of Dermatology” The treatment didn't work for the woman's hair loss and skin darkening.
1 citations
,
November 2022 in “Frontiers in medicine” The study found that giant pandas have more melanin in black hair follicles than white, with gene expression differences that could affect hair color and skin health.
43 citations
,
August 2008 in “Regenerative Medicine” Scientists created early-stage hairs from mouse cells that grew into normal, pigmented hair when implanted into other mice.
7 citations
,
January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” T-cell reconstitution after thymus transplantation can cause hair whitening and loss.
35 citations
,
January 1981 March 2007 in “International Journal of Cosmetic Science” Hair with more melanin resists weather damage better.
April 2017 in “Journal of Dermatological Science” Certain flavonoids can improve the growth of pigmented hair in mice.
2 citations
,
May 2019 in “International Journal of Molecular Sciences” Tranexamic acid turns white hair brown in certain mice by affecting specific proteins.
58 citations
,
February 2016 in “Scientific reports” Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.