12 citations
,
May 2019 in “Journal of cosmetic dermatology” Effective treatments for premature hair graying still require significant research.
December 2024 in “Minia Journal of Medical Research” White hair in alopecia areata may be linked to reduced Sox10 expression.
March 2021 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Fat tissue around hair follicles releases a growth factor that helps hair grow and develop color.
40 citations
,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
13 citations
,
November 1959 in “Annals of the New York Academy of Sciences” Human hair follicles can grow back.
32 citations
,
January 2000 in “Human Heredity” Monilethrix severity varies and may be influenced by other genetic or environmental factors.
61 citations
,
February 1997 in “Differentiation” Hair differentiation starts earlier than thought, involving multiple type-II keratins.
450 citations
,
January 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color is determined by melanin produced and transferred in hair follicles.
1 citations
,
May 2023 in “Fertility and sterility” Men who went through puberty later had lower sperm counts and altered hormone levels, possibly affecting fertility.
4 citations
,
March 2013 in “The American Journal of Cosmetic Surgery” Melanin absorbing light is necessary but not enough for effective hair removal by light treatment.
June 2025 in “Clinical and Experimental Dermatology” Baricitinib treatment led to dark brown hair regrowth in a red-haired woman with alopecia areata.
January 1999 in “Journal of Investigative Dermatology”
30 citations
,
April 2017 in “European Journal of Cell Biology” CIP/KIP proteins help stop cell division and support hair growth.
17 citations
,
November 1967 in “American Journal of Anatomy” Hairless mice have longer hair follicles and abnormal structures during the catagen phase.
1 citations
,
December 2022 in “Clinical, Cosmetic and Investigational Dermatology” Midscalp hair density and terminal hair percentage are good indicators of female pattern hair loss severity.
6 citations
,
May 2003 in “PubMed” Small amounts of DNA can be found in the hair shaft, especially near the root, but it decreases with hair treatments and washing.
28 citations
,
March 1942 in “Journal of Endocrinology” Male rats grow hair faster than females, and certain hormones can slow or slightly increase hair growth, but not significantly beyond natural rates.
June 2025 in “Clinical and Experimental Dermatology” A 76-year-old man's grey hair turned back to its original color after radiotherapy.
19 citations
,
July 2004 in “Australasian Journal of Dermatology” Her hair grew back normally after she stopped rubbing it.
33 citations
,
March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
14 citations
,
January 2016 in “Experimental Dermatology” Hair regrowth doesn't convert thin hairs to thick hairs, but increases overall hair density.
11 citations
,
June 2001 in “British Journal of Dermatology” c-Myc, Max, and Bin1 help hair follicle cells mature and die.
56 citations
,
December 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle cells age faster and lose pigment due to less catalase, causing hair to turn gray.
235 citations
,
July 1999 in “Journal of biological chemistry/The Journal of biological chemistry” Human hair is made up of different keratins, some strong and some weak, with specific types appearing at various stages of hair growth.
18 citations
,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
Gray hair affects hair's movement and appearance, making it less bouncy and more wavy.
July 2010 in “British Journal of Dermatology” Hair loss in women may have multiple causes, and eyebrow regrowth possible with specific injections.
130 citations
,
December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle melanocytes die during hair regression.
March 2012 in “Journal of The American Academy of Dermatology” Temporal triangular alopecia usually starts in early childhood and treatment with Minoxidil has limited effectiveness.
1 citations
,
July 2001 in “Pediatrics in review” The girl has a hormonal imbalance causing increased hair growth and other male characteristics.