Hair loss is caused by hormonal changes that shorten hair growth phases and shrink hair follicles.
April 2018 in “Journal of Investigative Dermatology” Higher levels of nidogen1 and type IV collagen are found in basal cell carcinoma compared to normal skin.
77 citations
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April 2016 in “Science Advances” Researchers created a fully functional, bioengineered skin system with hair from stem cells that successfully integrated when transplanted into mice.
1 citations
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September 2018 in “Australasian Journal of Dermatology” A boy with GAPO syndrome had hair loss similar to male pattern baldness without hormone issues, possibly due to skin or blood vessel problems.
854 citations
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February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Understanding hair follicle development can help treat hair loss, skin regeneration, and certain skin cancers.
42 citations
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July 2014 in “Journal of biological chemistry/The Journal of biological chemistry” Heparan sulfate is important for hair growth, preventing new hair formation in mature skin, and controlling oil gland development.
1 citations
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May 2017 in “InTech eBooks” Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.
December 2014 in “Research and Reviews: Journal of Pharmacology and Toxicological Studies” Cabbage extract in hair gel may promote hair growth and could help treat hair loss.
1 citations
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December 2024 in “Scientific Data” Researchers identified key molecular changes in goat hair follicles that could improve cashmere production.
Finasteride and luteolin may help promote hair growth.
January 2022 in “Przegla̧d dermatologiczny” Minoxidil, a medicine initially for high blood pressure, can stimulate hair growth and is promising for treating hair loss, but it may cause side effects like itching and dizziness.
110 citations
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August 2011 in “Journal of Visualized Experiments” 3D skin models better mimic human skin and melanoma progression than older methods.
101 citations
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January 1997 in “Journal of Investigative Dermatology Symposium Proceedings” Nerves and chemicals in the body can affect hair growth and loss.
1 citations
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February 2015 in “Clinical and Experimental Dermatology” A man got six skin cancers within a year after a cell transplant for leukemia but was cancer-free 32 months later; skin checks are important post-transplant.
April 2021 in “Journal of Investigative Dermatology” IL-15 helps protect hair follicles from immune attacks and encourages hair growth.
February 2001 in “Chinese Journal of Dermatology” Epidermal growth factor (EGF) boosts the growth of hair follicle cells.
2 citations
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August 2023 in “Experimental Dermatology” HEY2+ cells help regenerate skin during wound healing.
Vegan exosome-like vesicles from microalgae improve skin and hair health, reducing wrinkles and enhancing elasticity.
April 2024 in “International journal of molecular sciences” Light-based treatment, Photobiomodulation, shows promise for non-invasive skin therapy with few side effects.
Hedgehog signaling can create new hair follicles in adult skin but may increase cancer risk.
January 2016 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” A substance called prostaglandin D2 is found more in bald scalps and it stops hair from growing. Blocking its receptor could potentially treat hair loss.
May 2012 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Prostaglandin D2, found in higher levels in bald scalps, stops hair growth, suggesting that blocking its receptor could potentially treat hair loss.
October 2025 in “Skin Health and Disease” Photothermal conditioning of PRP shows promise for improving hair growth but needs more research for confirmation.
January 1995 in “Skin Cancer” The outer root sheath in hair follicles changes during growth, with different keratinization processes in its layers.
May 2026 in “SKIN The Journal of Cutaneous Medicine” The supplement gummy and serum safely improve hair growth in women with hair loss.
July 2022 in “Journal of Investigative Dermatology” Blocking DPP4 can help activate hair growth and improve hair regeneration.
April 2018 in “Journal of Investigative Dermatology” The document concludes that ERBB2 mutations are common in extramammary Paget disease and may respond to systemic treatments like cancer immunotherapy.
60 citations
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March 2011 in “Proceedings of the National Academy of Sciences of the United States of America” RANK-RANKL signaling is essential for hair growth and skin health.
11 citations
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October 2017 in “Journal of Investigative Dermatology” Applying certain inhibitors to the skin can promote hair growth without harming cells.
24 citations
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December 2011 in “International Journal of Cancer” PTH-CBD agonists may help regrow hair after chemotherapy.