April 2018 in “Journal of Investigative Dermatology” Removing STAT5 from 3D-cultured human skin cells reduces their ability to grow hair.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Higher SPF sunscreens provide more DNA protection, and the form of sunscreen doesn't affect protection level.
April 2016 in “Journal of Investigative Dermatology” Removing alkaline phosphatase from human skin cells hinders the creation of new hair follicles.
March 2013 in “Molecular & Cellular Toxicology/Molecular & cellular toxicology” m-Aminophenol in hair dye can cause skin cell toxicity and stress responses.
37 citations
,
March 2012 in “International Journal of Radiation Biology” Mobile phone radiation can cause DNA damage in human hair root cells.
19 citations
,
October 2017 in “The FASEB Journal” Male hormones cause different growth in identical human hair follicles due to their unique epigenetic characteristics.
12 citations
,
January 2013 in “Acta Histochemica” Junctional proteins stabilize the inner root sheath and connect the companion layer in human hair.
7 citations
,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
7 citations
,
January 1990
6 citations
,
May 2020 in “Molecules/Molecules online/Molecules annual” Yak belly hair has higher porosity and is less stiff than human hair, making it absorb dye better but less suitable as a direct substitute for hair dyeing.
4 citations
,
November 2017 in “Journal of Cosmetic Dermatology” Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.
3 citations
,
January 1991 in “Toxicology in Vitro” Hair follicle cultures are effective for studying cell communication and testing chemicals.
2 citations
,
November 1973 in “PubMed” Sulfur-35 can be used to track hair growth and past exposure.
1 citations
,
December 2022 in “Applied Sciences”
January 2025 in “The Analyst” Calcium oxalate was found in human hair and could help detect certain health conditions.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
86 citations
,
May 2002 in “Journal of Investigative Dermatology” A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.
74 citations
,
October 1998 in “Journal of biological chemistry/The Journal of biological chemistry” The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.
3 citations
,
February 2024 in “Forensic Sciences Research” Mitochondrial DNA from nails and hair can be effectively analyzed for forensic use.
1 citations
,
February 2025 in “Scientific Reports” The method effectively analyzes skin tissue changes, especially in the arrector pili muscle and nerve fibers with hair follicles.
166 citations
,
August 2010 in “Proceedings of the National Academy of Sciences of the United States of America” Scientists found a new, less invasive way to study body clocks using hair cells, which shows shift workers' body clocks don't match their lifestyles.
128 citations
,
March 1989 in “Experimental Cell Research” Hoxc13 is important for hair and tongue development by controlling hair keratin genes.
93 citations
,
July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
75 citations
,
August 2011 in “Journal of Investigative Dermatology” Forming spheres boosts the ability of certain human cells to create hair follicles when mixed with mouse skin cells.
75 citations
,
November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.
67 citations
,
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.
63 citations
,
September 2009 in “Regenerative Medicine” Scientists found a way to grow human hair cells in a lab that can create new hair when transplanted.
43 citations
,
December 2013 in “Seminars in Cell & Developmental Biology” Genetic mutations can cause hair growth disorders by affecting key genes and signaling pathways.
36 citations
,
February 2018 in “British Journal of Dermatology” Sweat glands and hair follicles are structurally connected within a specific layer of skin fat.
29 citations
,
January 2021 in “Journal of Investigative Dermatology” Fat under the skin releases HGF which helps hair grow and gain color.