127 citations,
December 2007 in “Journal of Investigative Dermatology” Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.
122 citations,
July 2005 in “The FASEB journal” Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.
98 citations,
June 2008 in “Human mutation” A genetic change in the EDAR gene causes the unique hair traits found in East Asians.
91 citations,
January 2009 in “International Journal of Trichology” Different hair evaluation methods have their own pros and cons, and using multiple methods together is best for accurate hair loss diagnosis and tracking.
91 citations,
May 2003 in “American Journal of Pathology” Prolactin affects hair growth cycles and can cause early hair follicle regression.
79 citations,
March 1999 in “The journal of investigative dermatology/Journal of investigative dermatology” Procyanidin compounds from grape seeds were found to significantly increase mouse hair growth.
77 citations,
March 2021 in “Nature” Stress hormone corticosterone blocks a growth factor to slow down hair stem cell activity and hair growth.
76 citations,
March 2005 in “Journal of Molecular Medicine” Certain mice without specific receptors or mast cells don't lose hair from stress.
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.
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.
73 citations,
August 2011 in “Stem Cell Research” Human hair follicle stem cells can turn into multiple cell types but lose some of this ability after being grown in the lab for a long time.
73 citations,
June 2001 in “Endocrinology” Prolactin affects when mice shed and grow hair.
73 citations,
April 1999 in “Dermatologic Clinics” Lasers and light sources can effectively remove hair, work best on fair skin with dark hair, and usually need multiple treatments.
71 citations,
January 2019 in “International journal of biological sciences” Exosomes from dermal papilla cells help hair growth by making hair follicle stem cells multiply and change.
70 citations,
December 2004 in “Differentiation” The study identified and characterized new keratin genes linked to hair follicles and epithelial tissues.
68 citations,
March 2018 in “Biomaterials” Tiny needles with valproic acid can effectively regrow hair.
65 citations,
November 2012 in “Tissue Engineering Part B-reviews” Hair follicle stem cells are a promising source for tissue repair and treating skin or hair diseases.
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.
63 citations,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
62 citations,
February 2016 in “ACS Applied Materials & Interfaces” Technique creates 3D cell spheroids for hair-follicle regeneration.
62 citations,
December 2013 in “Aaps Journal” Squarticles effectively deliver hair growth drugs to follicles and dermal papilla cells.
62 citations,
November 2009 in “Aging Cell” Hedgehog signaling helps keep hair follicle stem cells the same in both young and old human skin.
62 citations,
January 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” A second domain of high sulfur KAP genes on chromosome 21q23 is crucial for hair structure.
61 citations,
June 2018 in “Proceedings of the National Academy of Sciences of the United States of America” Light can turn on hair growth cells through a nerve path starting in the eyes.
61 citations,
December 2016 in “The EMBO Journal” The study showed that hair follicle stem cells can maintain and organize themselves in a lab setting, keeping their ability to renew and form hair and skin.
59 citations,
September 2007 in “Biochemical and Biophysical Research Communications” The TRPV3 gene mutation affects hair growth by keeping mice in the growth phase longer, which could help treat hair loss.
58 citations,
March 2019 in “Experimental Dermatology” Exosomes from human skin cells can stimulate hair growth and could potentially be used for treating hair loss.
54 citations,
October 2002 in “Journal of controlled release” Medium lipophilic substances penetrate skin best, and adding ethanol can increase delivery to hair follicles.
54 citations,
September 2000 in “Archives of dermatology” A hair-straightening product caused widespread hair loss and scalp injuries, mainly affecting African American women.
48 citations,
December 2004 in “Differentiation” Tooth papilla cells can help regenerate hair follicles and grow hair.