February 2016 in “PubMed” Properly administered testosterone therapy is safe and effective but often not covered by insurance.
Melatonin may protect hair follicle stem cells from damage caused by chemotherapy.
January 2004 in “Linchuang pifuke zazhi” All-trans retinoic acid helps amelanotic melanocytes in hair follicles develop and produce pigment while reducing their growth.
December 1981 in “ビジネスコミュニケ-ション” TRPV1 affects sebaceous gland function and could help treat acne.
December 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” Hedgehog signaling controls hair follicle development and can affect skin cancer growth.
October 2025 in “Biomedicines” Terminalia chebula fruit extract helps hair growth by reducing DHT and boosting hair cell activity.
2 citations
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January 2014 in “International Journal of Endocrinology” Women with a certain type of tumor had higher levels of pregnancy hormone and male hormones, which decreased after treatment.
September 1978 in “Journal of steroid biochemistry/Journal of Steroid Biochemistry” 36 citations
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October 2007 in “Journal of Investigative Dermatology” Betacellulin helps blood vessel growth in wounds but delays hair growth.
December 2019 in “International journal of engineering applied science and technology” Tridax procumbens, a weed, has various medicinal properties including wound healing and antibacterial effects.
2 citations
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December 2020 in “American Journal of Dermatological Research and Reviews” The combination therapy was effective and well-tolerated, especially in young patients.
1 citations
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May 2025 in “The Journal of Dermatology” Increased regulatory T cell activity may lead to better outcomes in acute diffuse and total alopecia.
7 citations
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March 2022 in “The FASEB journal” Adult mice with CBS deficiency show minimal health issues and normal lifespan despite high homocysteine levels.
90 citations
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December 2008 in “Journal of Investigative Dermatology” Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.
17 citations
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January 2012 in “IOSR Journal of Environmental Science Toxicology and Food Technology” High doses of Tridax procumbens extract can be toxic, affecting liver and kidneys.
October 2023 in “IBRO neuroscience reports” Rat hair follicle stem cells have functional oxytocin receptors, useful for studying neuropsychiatric disorders.
43 citations
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January 2016 in “Oxidative medicine and cellular longevity” THSG from a Chinese plant helps with aging and related diseases.
46 citations
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December 2010 in “PubMed” Tocotrienol supplements significantly increased hair growth in people with hair loss.
25 citations
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January 2017 in “Steroids” Allopregnanolone increases growth and changes gene activity in human brain cancer cells.
3 citations
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October 2021 in “Clinica Chimica Acta” Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.
11 citations
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September 2022 in “World Journal of Advanced Pharmaceutical and Medical Research” Nicotiana tabacum has potential therapeutic uses but also poses toxic risks.
February 2026 in “Molecules” A new method can quickly and accurately measure tobacco exposure and stress using a small hair sample.
5 citations
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June 2024 in “Developmental Cell” Activating TRPV1 can boost hair growth by involving neurons, macrophages, and fibroblasts.
May 2019 in “Journal of clinical oncology” Topical calcitriol was safe and well-tolerated for potential hair loss prevention in chemotherapy patients.
24 citations
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March 2016 in “Journal of Investigative Dermatology” TIP39 and PTH2R help control calcium levels and skin cell development.
November 2011 in “Journal of Investigative Dermatology” TRH in hair follicles can influence hair color by increasing melanin.
19 citations
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September 2011 in “Journal of Dermatological Science” TGF-β1 increases androgen receptor activity in hair loss, but Hic-5/ARA55 can counter this effect.
164 citations
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December 1984 in “Proceedings of the National Academy of Sciences” TCDD reduces EGF receptor activity and causes various developmental changes in animals.
1 citations
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June 2006 in “Experimental dermatology” Acetylcholine receptors might be involved in the development of acne inversa and smoking could worsen the condition.
April 2024 in “American Journal of Case Reports” Quitting smoking stopped unusual hair growth in the airway.