159 citations
,
July 2006 in “Endocrine Reviews” Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.
77 citations
,
March 2021 in “Nature” Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.
70 citations
,
April 2017 in “Lasers in surgery and medicine” Blue light promotes hair growth by interacting with specific receptors in hair follicles.
66 citations
,
March 2018 in “British journal of dermatology/British journal of dermatology, Supplement” An imbalance between certain immune cells is linked to a chronic skin condition and may be influenced by obesity, smoking, and autoimmune issues.
66 citations
,
July 2015 in “Journal of Molecular Biology” The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.
61 citations
,
June 2018 in “Proceedings of the National Academy of Sciences of the United States of America” Light can turn on hair growth cells through a nerve path starting in the eyes.
57 citations
,
February 2013 in “Journal of Dermatological Science” Improving the environment and cell interactions is key for creating human hair in the lab.
50 citations
,
August 1999 in “Experimental dermatology” The control system for hair growth cycles is not well understood and needs more research.
47 citations
,
April 2000 in “The American journal of pathology” Bcl-2 overexpression protects against UVB damage but worsens hair loss from chemotherapy.
47 citations
,
May 1995 in “Journal of Investigative Dermatology” Hair follicles in people with alopecia have lower levels of a key blood vessel growth protein.
46 citations
,
March 2015 in “Regeneration” Mice can grow new hair follicles after skin wounds through a process not involving existing hair stem cells, but requiring more research to understand fully.
42 citations
,
February 2021 in “Signal Transduction and Targeted Therapy” Hair follicle regeneration possible, more research needed.
36 citations
,
April 2016 in “British journal of dermatology/British journal of dermatology, Supplement” A substance called VIP might protect hair follicles from being attacked by the immune system, and problems with VIP signaling could lead to hair loss in alopecia areata.
34 citations
,
June 2008 in “In vitro cellular & developmental biology. Animal” Scientists created a long-lasting stem cell line from human hair that can turn into different skin and hair cell types.
31 citations
,
September 2013 in “Stem Cells” Smad1 and Smad5 are essential for hair follicle development and stem cell sleepiness.
30 citations
,
October 2016 in “Current research in translational medicine” Hair follicles on the scalp interact with and respond to the nervous system, influencing their own behavior and growth.
30 citations
,
March 2015 in “PLoS ONE” Thyroxine can adjust the body's peripheral clock, potentially helping treat clock-related diseases.
19 citations
,
August 2019 in “Expert Opinion on Therapeutic Targets” New treatments for hair loss may target specific pathways and generate new hair follicles.
19 citations
,
March 2018 in “Journal of Investigative Dermatology” The gene Msx2 is crucial for hair follicle regeneration during wound healing.
15 citations
,
January 2015 in “Skin Pharmacology and Physiology” Parathyroid hormones are important for hair growth, but their use in treating hair loss from chemotherapy is still uncertain.
14 citations
,
February 2021 in “Experimental Dermatology” Cannabinoid receptor-1 signaling is essential for the survival and growth of human hair follicle stem cells.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.
1 citations
,
June 2024 in “PLoS ONE” HAP-cell-sheets improved wound healing in diabetic mice.
June 2026 in “Frontiers in Bioengineering and Biotechnology” Hair follicle systems are being engineered to better mimic natural hair follicles for studying hair disorders and testing treatments.
June 2026 in “Scientific Reports” Hypericin and berberine may help hair growth by activating oxytocin signals.
May 2026 in “Frontiers in Cell and Developmental Biology” Collagen networks play a key role in hair loss and follicle miniaturization.
May 2026 in “Frontiers in Cell and Developmental Biology” Hair follicle organoids can help study hair biology and disorders but need improvements for wider use.
March 2026 in “Frontiers in Medicine” Different types of alopecia cause hair loss due to immune system issues, with some allowing regrowth and others causing permanent loss.
Understanding hair follicle signaling can improve hair disorder treatments.
October 2025 in “Journal of Translational Medicine” Combining biomaterials and cell pathways can improve hair follicle regeneration.