September 2023 in “Journal of the American Academy of Dermatology” Red tattoo ink may cause skin growths, needing careful monitoring.
73 citations
,
November 2000 in “Proceedings of the National Academy of Sciences of the United States of America” There are two ways to start hair growth: one needs Stat3 and the other does not, but both need PI3K activation.
November 2025 in “ACS Omega” Teak leaf extract may help hair growth and reduce inflammation safely.
Certain chemicals and drugs can cause hair loss.
11 citations
,
May 2012 in “Genesis” Bmpr2 and Acvr2a receptors are crucial for hair retention and color.
55 citations
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March 2010 in “Aging” Circadian clock genes are important for hair growth and may affect aging-related hair loss and graying.
45 citations
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January 2010 in “Forensic science international” Neonatal hair can help determine drug exposure during pregnancy.
29 citations
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January 2017 in “Journal of Investigative Dermatology” The Msi2 protein helps keep hair follicle stem cells inactive, controlling hair growth and regeneration.
April 2026 in “American Journal of Dermatopathology” Increased blood vessel growth in lichen planopilaris may signal active disease needing aggressive treatment.
January 2025 in “Anais Brasileiros de Dermatologia” Male pattern baldness worsens with age and can be treated with medications like minoxidil and finasteride, but side effects and personalized care are important.
June 2024 in “Journal of Drug Delivery Science and Technology” Nanocarrier-based treatments show promise for better hair growth in androgenetic alopecia but need more research.
August 2023 in “Tzu Chi Medical Journal” Iron deficiency is the main cause of hair loss in women, and iron supplements started within 6 months can improve hair health.
8 citations
,
January 2017 in “Journal of Oral and Maxillofacial Pathology” Keratoacanthomas on lips may originate differently than those on skin.
June 2025 in “Stem Cell Research & Therapy” Understanding hair growth pathways can lead to better hair loss treatments.
344 citations
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June 2006 in “American Journal Of Pathology” Human hair follicles can provide stem cells for regenerative medicine.
166 citations
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July 1999 in “American Journal Of Pathology” The hairless (hr) gene is essential for normal hair follicle function and its mutation leads to hair loss.
139 citations
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September 2001 in “The journal of investigative dermatology/Journal of investigative dermatology” Mutations in the Vitamin D receptor gene can cause hair loss similar to mutations in the Hairless gene.
134 citations
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July 2020 in “Experimental dermatology” Hair follicles are normally protected from the immune system, but when this protection fails, it can cause hair loss in alopecia areata.
71 citations
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November 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Edar signaling is crucial for proper hair follicle development and function.
66 citations
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February 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” Adenosine may promote hair growth by increasing FGF-7 levels in dermal papilla cells.
50 citations
,
March 2018 in “BMC Genomics” Non-coding RNAs help control hair growth cycles in cashmere goats, suggesting ways to improve cashmere production.
41 citations
,
September 2003 in “Journal of Investigative Dermatology” Overexpression of COX-2 causes early hair loss in mice, but can be prevented with a COX-2 inhibitor.
35 citations
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May 2011 in “Experimental Dermatology” Aging causes changes in hair follicles, leading to weaker hair growth.
26 citations
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December 2020 in “Genes” A combination of IGF-1 and EGF promotes hair growth in Angora rabbits.
22 citations
,
October 2007 in “Journal of Investigative Dermatology” Stem cells in mouse nails are found in the nail matrix and may control nail growth.
18 citations
,
March 2016 in “Cosmetics” Telogen Effluvium is a condition causing excessive hair loss due to stress, illness, drugs, or hormonal changes, and can be treated with specific products or naturally resolves after 3-4 years.
9 citations
,
March 2007 in “Hair transplant forum international” Densitometry and video-microscopy are precise for evaluating hair loss and transplant success but need special equipment and training.
7 citations
,
June 2020 in “npj regenerative medicine” GDNF helps grow hair and heal skin wounds by acting on hair stem cells.
3 citations
,
September 2021 in “Journal of Food Science and Nutrition” Red Ginseng Extract helps hair grow and improves skin health by stimulating cell growth and enhancing the body's antioxidant defense system.
2 citations
,
July 2025 in “Frontiers in Veterinary Science” MicroRNAs and AI can improve cashmere goat hair quality and aid in hair disorder diagnosis.