The 16th-century mummy's hair was well-preserved due to a calcium coating.
January 2004 in “Banca y finanzas: Revista profesional de gestión financiera” Androgens increase pigmentation in certain hamster skin areas, but estrogens can reverse this effect.
A white-tailed deer fawn in South Dakota was the first cervid found with congenital hypotrichosis, a condition causing sparse or missing hair.
January 2003 in “Linchuang pifuke zazhi” Melanin granules can be expelled by exocytosis.
Oral contraceptives can affect skin and hair, improve acne, but may cause pigmentation, dermatitis, and other conditions.
February 2005 in “CRC Press eBooks” Hair color is due to active pigment cells in hair during growth.
April 1986 in “CRC Press eBooks” Hair color is determined by melanins produced in hair cells.
April 2022 in “DOAJ (DOAJ: Directory of Open Access Journals)” Polygonum multiflorum may treat hair loss by reducing inflammation and stress, and boosting melanin.
127 citations
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November 2010 in “Pigment cell & melanoma research” We need more research on human hair follicle pigmentation, not just mouse models.
82 citations
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January 1997 in “Forensic science international” Drugs can be incorporated into hair based on their chemical properties and hair pigmentation.
38 citations
,
June 2005 in “Acta Biochimica Polonica” Splenic eumelanin in C57BL/6 mice is different from hair eumelanin.
25 citations
,
October 2012 in “Dermatologic clinics” Laser and light treatments can effectively remove hair long-term.
3 citations
,
March 2008 in “Medical laser application” Lasers have become safer and more effective for treating skin problems and hair removal.
1 citations
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January 2009 in “Elsevier eBooks” Laser hair removal can be effective for darker skin but requires careful use to avoid side effects.
October 2025 in “International Journal of Research in Dermatology” New laser technologies and methods are safer and more effective for hair removal on darker skin tones.
January 2019 in “International Journal of Plant Animal and Environmental Sciences” The extract from marine green alga Chlamydomonas sp. W80 has antioxidant, anti-inflammatory, anti-aging, hair growth, immune-boosting, and skin lightening effects.
8 citations
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June 2022 in “International Journal of Molecular Sciences” Tiny particles called extracellular vesicles show promise for skin improvement and anti-aging in facial care but face challenges like low production and lack of research.
3 citations
,
November 2022 in “Frontiers in Oncology” Melanin may help melanoma cells grow by aiding their metabolism.
53 citations
,
July 1981 in “Journal of Endocrinology” α-MSH and cyclic AMP boost melanin production, while cyclic GMP and melatonin reduce it.
7 citations
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January 1995 in “The Indian Journal of Animal Sciences” The Indian buffalo teat has a melanin-rich epidermis, no hair follicles, and a complex structure with muscle, blood vessels, and immune cells.
November 2025 in “Frontiers in Veterinary Science” A 1.0% tyrosine diet increases melanin in chicken feathers.
Human hair color is determined by melanin types and genetic factors.
April 2018 in “Journal of Investigative Dermatology” BMP signaling is important for skin color, affecting melanin production, pigment spread, and cell movement.
January 2006 in “Carl von Ossiezky University of Oldenburg” Unpigmented keratinocytes absorb substances faster, while melanocytes bind more strongly to melanin.
June 2008 in “British Journal of Dermatology” UK medical students lack dermatology education, liver biopsy patients with risk factors show more fibrosis, and certain fungi resist drugs due to melanin; genetics may influence female hair loss.
July 1975 in “Archives of Dermatology” The document suggests a possible connection between rapid weight loss and hair loss, and reports a case of skin condition improvement after stopping acne medication.
25 citations
,
August 2015 in “Molecules” Mimosine dipeptides are promising for treating hyperpigmentation and inflammation.
14 citations
,
October 2020 in “Scientific reports” Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.
152 citations
,
December 2003 in “Micron” As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.
85 citations
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January 2002 in “Dermatologic Clinics” Lasers and intense pulsed light can safely and effectively remove hair by targeting hair follicles.