97 citations
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March 2010 in “The American Journal of Human Genetics” A mutation in the KRT74 gene causes tightly curled hair.
58 citations
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January 2006 in “Skin Pharmacology and Physiology” High levels of testosterone and 5α-DHT can lead to cell death in cells important for hair growth.
27 citations
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September 1999 in “Journal of Investigative Dermatology” Human skin cells contain Protease Nexin-1, and male hormones can decrease its levels, potentially affecting hair growth.
17 citations
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July 2018 in “International Journal of Cosmetic Science” Keratin-based particles safely improve hair strength, smoothness, and heat protection.
17 citations
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May 2018 in “PeerJ” VB-1, a natural compound, may promote hair growth by enhancing a key cell growth pathway.
3 citations
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August 2022 in “Molecules/Molecules online/Molecules annual” A new strain of bacteria from the human skin can help prevent hair loss.
2 citations
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October 2023 in “Science advances” Touching hair can activate nearby nerve cells through signals from the hair's outer layer.
2 citations
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May 2023 in “Plants” Allium hookeri extract may help promote hair growth and protect cells from damage.
1 citations
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January 2008 Topical iodine can help regenerate human scar tissue quickly.
January 2025 in “Cosmetics” Astragalus sinicus extracts may help promote hair growth and treat hair loss.
7 citations
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January 2021 in “Evidence-based complementary and alternative medicine” Porphyra-334 may help reduce wrinkles and promote hair growth.
253 citations
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March 1994 in “Developmental dynamics” Apoptosis is essential for human skin development and forming a functional epidermis.
91 citations
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March 2011 in “Stem Cell Reviews and Reports” Human epidermal neural crest stem cells can become bone and skin pigment cells, making them useful for therapies.
64 citations
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January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” Human stem cells can help form hair follicles in mice.
53 citations
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June 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” KAP genes show significant genetic variability, but its impact on hair traits is unclear.
41 citations
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June 2006 in “Journal of Investigative Dermatology” Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.
24 citations
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January 1989 Human papilla cells from hair follicles show unique growth behaviors but don't induce hair growth in vitro.
16 citations
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October 2018 in “Experimental Dermatology” Mesenchymal stem cell therapy may help treat alopecia areata by promoting hair growth and reducing inflammation.
14 citations
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April 2021 in “International journal of molecular sciences” Mesenchymal stem cells may help treat hair loss by improving hair cell growth and reducing inflammation.
7 citations
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December 2016 in “Journal of The Taiwan Institute of Chemical Engineers” Pig blood plasma can be used to promote human hair growth and is a good alternative to the commonly used serum additive.
6 citations
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September 2019 in “Skin pharmacology and physiology” RCS-01 therapy is safe and may improve skin structure by affecting gene expression.
3 citations
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February 2023 in “ACS omega” Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.
1 citations
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January 2024 in “Food Science and Technology Research” Strawberry water-extract may boost hair cell metabolism.
1 citations
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June 2014 in “[Thesis]. Manchester, UK: The University of Manchester; 2014.” Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.
April 2026 in “International Journal of Molecular Sciences” Ageratum houstonianum extract and agerarin may help hair growth.
February 2026 in “International Journal of Molecular Sciences” 3-Hydroxypropionic acid may help treat hair loss by promoting hair growth in cells.
December 2025 in “Neurobiology of Stress” People who recently attempted suicide during depression showed signs of adrenal fatigue, but had higher DHEA levels around the attempt time.
March 2024 in “Journal of Microbiology and Biotechnology” Phloroglucinol may help improve hair loss by promoting hair growth and reducing oxidative stress.
102 citations
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April 2014 in “PloS one” Wharton’s Jelly stem cells from the umbilical cord improve skin healing and hair growth without scarring.
67 citations
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August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Androgens promote beard growth but cause hair loss in androgenetic alopecia, with TGF-β1 as a potential treatment target.