4 citations
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December 2020 in “Journal of the American Academy of Dermatology” Pulling 2 or fewer hairs is normal for all hair types, including Afro- and Asian-textured hair.
January 2010 in “대한미용학회지” Polygoni multiflori Radix water extracts promote hair growth in mice.
June 2014 in “Toxicologie analytique et clinique/Annales de toxicologie analytique” Older age increases positive hair alcohol test results, and chest hair is a good alternative for testing; season affects results, with higher levels in winter.
Beta vulgaris L. fruit extracts, especially ethanolic, effectively promote hair growth.
7 citations
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December 2010 in “대한의생명과학회지” Hair growth after depilation increases skin thickness, mast cell counts, and cell activity.
1 citations
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January 2014 Crataegus pinnatifida extract promotes hair growth in mice.
May 2025 in “Frontiers in Genetics” A new genetic variant in the LIPH gene causes hair growth issues in a Chinese patient.
48 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
143 citations
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October 2008 in “Journal of The American Academy of Dermatology” Comma hairs are a specific sign of tinea capitis when viewed with videodermatoscopy.
2 citations
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August 2023 in “Development” Hair follicles in the back of the rosette fancy mouse have reversed orientations due to a gene mutation.
April 2018 in “Journal of Investigative Dermatology” A new peptide, FOL-005, may help treat excessive hair growth by reducing a hair growth promoter, FGF7.
87 citations
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July 2009 in “The journal of investigative dermatology/Journal of investigative dermatology” Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.
7 citations
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November 2014 in “Histochemistry and Cell Biology” The we/we wal/wal mice have defects in hair growth and skin layer formation, causing hair loss, useful for understanding alopecia.
13 citations
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July 2012 in “Pigment Cell & Melanoma Research” A mutation in the Adam10 gene causes freckle-like spots on Hairless mice.
15 citations
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August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
5 citations
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October 2013 in “Experimental Dermatology” The commentary explains that a balance of HR protein and putrescine is important for normal hair growth.
January 2025 in “Animal Science Journal” Golden takin's hair structure is adapted to maintain body temperature in harsh winters.
1 citations
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April 2023 in “Animals” Wnt and BMP pathways stimulate hair growth in Min pigs, with Wnt being more effective.
Male goat smell increases reaction in young female goats' noses but doesn't cause them to start puberty early.
13 citations
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November 1959 in “Annals of the New York Academy of Sciences” Human hair follicles can grow back.
September 1984 in “Journal of Biological Education” Human hair growth involves active, resting, and intermediate phases, and examining plucked hairs can teach students about hair biology and diseases.
January 2025 in “Surgical & Cosmetic Dermatology” The gel may help hair regrow faster and improve skin after hair removal.
October 2024 in “Skin Research and Technology” Pili annulati causes zebra-striped hair but doesn't affect hair strength or quality of life.
3 citations
,
March 2016 in “Journal of Cosmetic Dermatology” GPIGS peptide increases thick hair growth in balding Japanese men.
May 2017 in “Journal of the American Academy of Dermatology” 36 citations
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July 1996 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with the 'lanceolate hair' mutation have abnormal hair and skin similar to human Netherton's syndrome.
14 citations
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May 2016 in “International Journal of Molecular Sciences” PP2Acα is essential for proper hair and skin development.
July 2024 in “Journal of Investigative Dermatology” PP405 may help hair growth by activating hair follicle stem cells.
24 citations
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December 1957 in “Experimental Cell Research” The glassy layer of hair follicles has different fibril sizes and arrangements in guinea pigs and young mice.
12 citations
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September 2014 in “Journal of Food Science and Nutrition” Platycarya strobilacea extract is a strong antioxidant that can grow hair better than minoxidil.