7 citations
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October 2006 in “Medical hypotheses” UV light might cause excessive hair growth by increasing PGE2 in the skin.
82 citations
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November 1959 in “Annals of the New York Academy of Sciences”
8 citations
,
January 2014 in “BioMed Research International” Eclipta alba extract was found to be effective in promoting hair growth in hairless mice.
GPC1 is important for blood vessel growth in hair follicles and could help treat hair loss.
48 citations
,
May 1991 in “The journal of investigative dermatology/Journal of investigative dermatology” Trichohyalin is also found in the outer layers of normal human skin.
66 citations
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August 2001 in “Experimental Dermatology” Human hair follicle cells can grow hair when put into mouse skin if they stay in contact with mouse cells.
33 citations
,
September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
13 citations
,
January 2014 in “Aesthetic Surgery Journal” Cyperus rotundus oil effectively reduces unwanted hair without side effects.
2 citations
,
January 2007 in “Actas Dermo-Sifiliográficas” Two cases of hairy elbows syndrome were described, with normal skin texture and symmetrical hair growth.
147 citations
,
August 2005 in “The Plant Cell” The TIP1 gene is crucial for normal plant cell growth in Arabidopsis.
5 citations
,
January 1964 in “Naunyn-Schmiedeberg s Archives of Pharmacology” Iodine is absorbed by hair just below the skin surface.
April 2024 in “The journal of phytopharmacology” Orchid callus extract can help hair grow and may be used in eco-friendly hair products.
March 2021 in “CRC Press eBooks” The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.
58 citations
,
November 1969 in “British Journal of Dermatology” Netherton's disease causes multiple hair defects.
November 2025 in “Clinical Cosmetic and Investigational Dermatology” Digital microscopy can help diagnose hirsutism by measuring hair growth.
September 2016 in “Medical Sains/Medical sains” Liquorice extract promotes hair growth in male rabbits, with 2.5% concentration being most effective.
578 citations
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May 1996 in “Plant Cell & Environment” Low phosphorus makes Arabidopsis thaliana grow longer root hairs.
44 citations
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June 2018 in “Journal of Cellular Physiology” Researchers developed a 3D model of human hair follicle cells that can help understand hair growth and test new hair loss treatments.
January 2026 in “Ethnobiology”
64 citations
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July 1997 in “Journal of The American Academy of Dermatology” Finding eosinophils near hair bulbs helps diagnose alopecia areata.
June 2023 in “Experimental dermatology” Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.
Chrysanthemum zawadskii extract may help treat hair loss by promoting hair growth and affecting growth factors.
65 citations
,
February 1992 in “Development” Type II keratin genes are crucial for hair follicle differentiation and have a conserved structure and expression pattern.
60 citations
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November 2013 in “Development” Keratin 79 marks a new group of cells that are key for creating and repairing the hair follicle's structure.
60 citations
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December 2003 in “Journal of Investigative Dermatology” K6hf is found in specific parts of hair follicles, nails, and tongue, and is linked to hair growth and structure.
29 citations
,
February 1989 in “Journal of Cutaneous Pathology” A unique hair tumor with a rippled pattern was identified, showing incomplete differentiation and unusual cell arrangements.
Hair bulb cells can create skin-like tissues for potential skin repair.
December 2018 in “Jurnal Farmamedika (Pharmamedica Journal)” The combination of watermelon skin extract and banana trunk liquid promotes hair growth in male white rats.
30 citations
,
November 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” The lipid in human hair follicles acts as a barrier, similar to the skin's lipid layer.