1 citations
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December 2011 in “EFSA Journal” Spermidine may help extend the growth phase of hair.
July 2012 in “EFSA supporting publications” The EFSA maintained its view that spermidine's effect on hair growth is related to disease treatment and does not meet the health claim criteria.
January 2005 in “Cosmetic Surgery Times” Infrared light therapy helps regrow hair.
71 citations
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June 2007 in “Bioorganic & Medicinal Chemistry Letters” PLGA nanospheres improve hair growth by effectively delivering ingredients to hair follicles.
February 2024 in “ACS Omega” The Shen Bai Hair Growing Decoction may help treat hair loss by promoting hair growth and reducing inflammation.
69 citations
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April 2010 in “Clinical ophthalmology” Bimatoprost is effective for growing longer, thicker, and darker eyelashes.
12 citations
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February 1999 in “British Journal of Dermatology” Minoxidil increased small openings in blood vessel walls near growing hair in rats.
5 citations
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March 2001 in “Journal of biomechanics” Growing hairs are easier to pull out than resting hairs due to different anchorage strengths.
2 citations
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December 2007 in “Microbial pathogenesis” Anthrax bacteria can infect and destroy hair follicles in mice, but the immune system eventually clears the infection.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Estetrol may help prevent hair loss and promote hair growth in women.
A woman had temporary hair loss due to stress from a spinal cord injury.
February 2005 in “CRC Press eBooks” Hair color is due to active pigment cells in hair during growth.
Pregnancy and hormonal contraceptives can cause temporary hair loss on the scalp and increased hair growth on the face and body.
107 citations
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September 2002 in “Journal of Investigative Dermatology” Researchers found that hair shedding happens mostly when new hair is growing and involves a unique process.
April 2021 in “Journal of Investigative Dermatology” A trial showed that a new treatment is safe and effective for male pattern baldness, with most participants growing new hair.
4 citations
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April 2019 in “Cell Stem Cell” Certain immune cells in the skin can stop hair from growing.
January 2025 in “Arquivo Brasileiro de Medicina Veterinária e Zootecnia” Agoutis in captivity have more resting (telogen) hairs than growing (anagen) hairs, regardless of season or gender.
3 citations
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April 2016 in “Food Science and Biotechnology” Oriental melon leaf extract may help hair grow and keep it in the growing phase longer.
10 citations
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May 2010 in “Journal of The American Academy of Dermatology” A 38-year-old African American woman has a rare condition that prevents her from growing long hair.
January 2008 in “中山醫學大學醫學研究所學位論文” Danthron from Rhubarb causes melanoma cells to stop growing and die.
19 citations
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November 2001 in “Journal of Investigative Dermatology Symposium Proceedings” Human hair follicles can regenerate and recover after severe injury by going through a brief abnormal resting phase before growing again.
40 citations
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July 1989 in “Journal of Cell Science” Rat hair follicles can be kept alive in a lab for 7 days but then stop growing.
5 citations
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November 2009 in “Revista médica de Chile” Hair growth cycles in Chileans vary seasonally, with more hair resting in summer and growing in winter.
4 citations
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January 2018 in “Advances in Experimental Medicine and Biology” The document concludes that hair follicles have a complex environment and our understanding of it is growing, but there are limitations when applying animal study findings to humans.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Prostaglandin E2 helps prevent hair loss from radiotherapy by protecting hair growth cells and aiding self-repair.
129 citations
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October 2000 in “British Journal of Dermatology” Finasteride helps increase hair growth in men with hair loss.
42 citations
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July 2012 in “PLOS ONE” Estrogen can temporarily slow down hair growth but this can be reversed.
33 citations
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September 1990 in “Proceedings of the National Academy of Sciences” The study showed that a specific DNA sequence can control gene expression in hair growth areas of mice.
11 citations
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September 2012 in “Journal of Nanjing Medical University” Cyclosporine A was found to increase hair growth in mouse whisker follicles.
4 citations
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March 2013 in “The American Journal of Cosmetic Surgery” Melanin absorbing light is necessary but not enough for effective hair removal by light treatment.