July 2024 in “Journal of Investigative Dermatology” PP405 may help hair growth by activating hair follicle stem cells.
May 2017 in “Journal of the American Academy of Dermatology” Monilethrix is a rare, inherited condition causing fragile hair and hair loss, with no cure but some treatments may help.
6 citations
,
March 2015 in “Journal of The American Academy of Dermatology” Hair dye can make it hard to diagnose scalp conditions correctly.
November 2025 in “Journal of Cosmetic Dermatology” Exosome therapy can safely and effectively restore color to gray hair.
2 citations
,
November 2017 in “Histochemistry and Cell Biology” Polyamines are abundant in certain parts of rat hair follicles and may play a key role in hair growth.
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.
14 citations
,
January 1977 in “PubMed” The hair keratin variant is mostly found in Caucasians.
23 citations
,
November 2011 in “Journal of the European Academy of Dermatology and Venereology” Hair loss is a rare but recognized symptom of pemphigus vulgaris, with patients usually regrowing hair after treatment.
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.
November 2022 in “Skin Appendage Disorders” PT-20 did not significantly improve gray hair repigmentation.
101 citations
,
June 2005 in “Journal of The American Academy of Dermatology” Very few people experience increased hair growth after laser hair removal, especially those with darker skin and black hair.
January 2007 in “Journal of the American Academy of Dermatology” A 73-year-old man's grey-white hair turned dark brown after eczema treatment.
14 citations
,
June 2013 in “Anais Brasileiros de Dermatologia” Follicular red dots may be a normal feature seen in people with less skin pigmentation, not necessarily indicating a scalp disorder.
9 citations
,
November 2017 in “Journal of Glaucoma” Latanoprost eye drops may cause skin depigmentation.
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.
13 citations
,
July 2016 in “Indian Journal of Dermatology” DPR can show different hair characteristics, as seen in two brothers with normal hair.
3 citations
,
October 1979 in “Laboratory animals” Hairless rats are good for testing anti-inflammatory drugs, similar to haired rats, without needing to remove fur.
5 citations
,
June 2014 in “Pediatric dermatology” A baby girl grew extra hair from contact with her grandfather's hair medicine, but it went away after stopping exposure.
13 citations
,
January 2002 in “Clinics in dermatology” A mushroom extract might reduce hair loss and liver damage caused by certain chemotherapy drugs in animals.
7 citations
,
December 2013 in “The Journal of Dermatology” A woman's hair turned gray and fell out after starting a cancer drug called imatinib mesylate.
1 citations
,
January 2009 in “Elsevier eBooks” Laser hair removal can be effective for darker skin but requires careful use to avoid side effects.
10 citations
,
March 1973 in “Journal of Investigative Dermatology” 103 citations
,
April 2005 in “Experimental dermatology” Prostaglandin F2alpha and related compounds can increase hair growth and darken hair in mice.
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.
44 citations
,
July 2013 in “Journal of the American Academy of Dermatology” Poliosis circumscripta is a patch of white hair caused by lack of melanin, linked to genetic and acquired conditions.
24 citations
,
November 1978 in “Biochemistry” α-type filaments in guinea pig hair follicles have unique structural features.
June 2025 in “Albus Scientia” MC1R gene variations affect skin, hair color, UV sensitivity, and melanoma risk.
30 citations
,
April 2013 in “Journal of Investigative Dermatology” Radiation mainly affects keratinocyte stem cells, not melanocyte stem cells, causing hair to gray.
2 citations
,
March 2020 in “Developmental cell” Stress can cause hair to turn gray by depleting pigment-producing cells through the release of a stress hormone.
August 2024 in “Journal of the American Academy of Dermatology” Nail color change might be an early sign of skin pigmentation from minocycline.