January 1992 in “Proceedings of the New Zealand Society of Animal Production” Ferret hair growth starts between 0 and 4 days after melatonin treatment, with cell growth peaking in the hair germ and declining as the hair matures.
47 citations
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May 1999 in “Reproduction” Goat reproductive activity and coat growth are affected by light and temperature, with temperature altering prolactin levels and hair growth, but not melatonin or estrus onset.
59 citations
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April 2016 in “Cell Reports” EdnrB signaling helps melanocyte stem cells regenerate and could be targeted to treat pigmentation issues.
Muscarinic acetylcholine receptors help regulate and promote hair growth.
February 2025 in “Endocrine Reviews” Hormones affect skin aging, but only topical retinoids and estrogens are used in treatments now.
September 1997 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Alopecia patients have a less active liver monoxygenase system, which can be treated with photochemotherapy and system inducers.
36 citations
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March 2002 in “Journal of Biological Chemistry” Food deprivation increases MST enzyme in the brain, possibly affecting energy balance.
Drinking sweetened tea and late bedtimes increase the risk of hair loss in women.
11 citations
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November 1991 in “Journal of Neuropathology & Experimental Neurology” Brindled mice show abnormal catecholamine neuron development due to copper deficiency.
January 2026 in “Aging and Disease” The α-MSH-MC1R-cAMP pathway does not protect skin cells from UVA damage.
January 2004 in “Linchuang pifuke zazhi” All-trans retinoic acid helps amelanotic melanocytes in hair follicles develop and produce pigment while reducing their growth.
58 citations
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February 2016 in “Scientific reports” Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.
1 citations
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October 2022 in “Annual review of cell and developmental biology” The nervous system helps control stem cell behavior and immune responses, affecting tissue repair and maintenance.
2 citations
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May 2023 in “Photobiomodulation, photomedicine, and laser surgery” Light therapy is effective and safe for treating skin color disorders like vitiligo and dark spots.
28 citations
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November 2017 in “Molecular and cellular endocrinology” Testosterone and its byproducts help support male sexual behavior through different pathways in the brain and body.
19 citations
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January 2012 in “Frontiers in Neural Circuits” Neurosteroids and benzodiazepines reduce neuron excitability, with lasting effects on inhibitory neurons.
40 citations
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May 2014 in “PLoS ONE” Chronic stress can reduce skin pigmentation.
December 2023 in “Journal of ethnopharmacology” Tribuloside can increase skin pigmentation by enhancing melanin production and distribution.
September 2017 in “Journal of Investigative Dermatology” Blue light helps hair growth by affecting specific proteins in hair follicle cells.
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.
35 citations
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November 2021 in “Journal of Animal Science and Biotechnology/Journal of animal science and biotechnology” DNA methylation changes in Tan sheep affect growth and fur traits.
April 2023 in “Journal of Investigative Dermatology” IL-24 contributes to skin aging by increasing collagen-degrading enzymes and decreasing collagen production when exposed to air pollution.
November 2022 in “Journal of Investigative Dermatology” Dynlt3 is important for melanosome transport and skin coloration.
7 citations
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December 2006 Tribulus terrestris extract significantly increases MSH expression and melanin production in mouse hair follicles.
November 2022 in “Skin Appendage Disorders” PT-20 did not significantly improve gray hair repigmentation.
September 2025 in “International Journal of Innovative Technologies in Social Science” Red light therapy may help rejuvenate skin and regrow hair.
January 2012 in “heiDOK (Heidelberg University)” Dormant melanoma cells in mice interact minimally with memory T cells due to a suppressive tumor environment.
April 2023 in “Journal of Investigative Dermatology” 22 citations
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June 2010 in “Experimental Dermatology” Lower MC2R expression may contribute to alopecia areata.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” MPZL3 is important for controlling the hair growth cycle in mice and humans.