February 2025 in “The Open Dermatology Journal” Many COVID-19 survivors, especially women, experience hair loss and skin color changes, needing specific post-recovery care.
April 2018 in “Journal of Investigative Dermatology” The research found that a specific skin cell type not only triggers hair growth but also controls hair color, and that aging can lead to hair loss and color changes.
13 citations
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March 2020 in “Frontiers in cell and developmental biology” A substance called TCQA could potentially darken hair by activating certain genes and increasing melanin.
11 citations
,
January 2012 in “Journal of cell science” Rac1 is essential for proper hair structure and color.
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.
6 citations
,
August 2019 in “PLOS ONE” Gambogic Amide helps maintain hair color and promotes hair growth.
April 2026 in “The FASEB Journal” Exosomal miR-199a-3p from dermal papilla cells helps control hair color by affecting melanocytes.
April 2025 in “Turkish Journal of Hematology” Nilotinib may cause gray hair to return to its original color.
August 2024 in “Journal of the Korean Society of Cosmetology” Wild peach leaf extract improves hair strength, thickness, and shine after dyeing.
November 2022 in “Journal of Investigative Dermatology” Blocking mTORC1 activity could increase hair pigmentation and potentially reverse greying.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Blocking mTORC1 activity with rapamycin could help increase hair pigmentation and growth, potentially reversing gray hair.
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.
44 citations
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March 1947 in “Endocrinology” Thiourea compounds affect hair growth and pigmentation in black rats.
32 citations
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March 2016 in “American Journal of Physical Anthropology” African hair is curled, Asian hair is thick, European hair is lighter, and chemical methods help identify hair color differences.
29 citations
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April 1997 in “Developmental Dynamics” Trypsin slows hair growth and affects color by causing cell death in hair follicles.
3 citations
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April 1997 in “Developmental Dynamics” Trypsin slows hair growth and affects color by causing cell death in hair follicles.
April 2012 in “Development” Rac1 is crucial for normal hair structure and pigmentation.
29 citations
,
January 2021 in “Journal of Investigative Dermatology” Fat under the skin releases HGF which helps hair grow and gain color.
April 2018 in “Journal of Investigative Dermatology” Fat under the skin can help hair grow longer, darker, and increase cell growth.
29 citations
,
January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” P-cadherin is crucial for hair follicle pigmentation but not skin pigmentation.
3 citations
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January 2021 in “Skin appendage disorders” Hair color is not a risk factor for developing alopecia areata.
56 citations
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November 2010 in “Pigment Cell & Melanoma Research” Brain hormones significantly affect hair color and could potentially be used to prevent or reverse grey hair.
15 citations
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January 2017 in “Pigment International” Early hair graying is often inherited and influenced by genetics, environment, and lifestyle, but treatment options are limited.
11 citations
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April 2013 in “Homo” Darker skin in 10-year-old girls may be an early sign of puberty.
1 citations
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April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” mTORC1 activity is important for hair growth and color, and targeting it could help treat hair loss and greying.
December 2025 in “International Journal of Research in Dermatology” The Ayurvedic treatment safely and effectively restores natural hair color by increasing black hair and reducing grey hair.
11 citations
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September 2024 in “Journal of the European Academy of Dermatology and Venereology” Hair regrows faster in alopecia areata than skin re-pigments in vitiligo due to differences in stem cells and treatment effects.
March 2026 in “Portuguese Journal of Dermatology and Venereology” Avoid hair dye after microneedling to prevent scalp pigmentation.
January 2019 in “Clinical pediatric dermatology” Scalp micropigmentation is a non-surgical alternative to hair transplants that mimics hair follicles and requires no downtime.