April 2023 in “Journal of Investigative Dermatology” Dkk4 protein helps control how hair grows and its arrangement.
June 2013 in “Digital Repository (National Repository of Grey Literature)” Hair loss negatively affects self-esteem and social interactions, but people use coping strategies like wigs or shaving to manage it.
4 citations
,
April 2018 in “The journal of pediatrics/The Journal of pediatrics” A 6-year-old girl's inability to grow her hair long was due to Loose Anagen Hair Syndrome, which causes hair to shed easily and may improve with age.
1 citations
,
January 2015 in “International journal of trichology (Print)” A single long white eyelash is a rare but benign condition.
April 2023 in “Advanced functional materials” The study created a tool that mimics natural cell signals, which increased cell growth and could help with hair regeneration research.
85 citations
,
June 2017 in “Journal of Investigative Dermatology” Blimp1 is crucial for hair follicle growth and skin health.
June 2023 in “Frontiers in Genetics” Genes related to calcium signaling and lipid metabolism are important for curly hair in Mangalitza pigs.
12 citations
,
August 1984 in “Genetics Research” The N gene affects the protein makeup of mouse hair.
38 citations
,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
April 2017 in “Journal of Investigative Dermatology” A virus protein can activate a pathway that may lead to abnormal hair follicle development.
41 citations
,
November 2011 in “The Journal of Dermatology” Some hair loss disorders are caused by genetic mutations affecting hair growth.
48 citations
,
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.
February 2012 in “Clinical and Experimental Dermatology” Many adult women experience unexplained excessive hair shedding, often starting before age 40.
9 citations
,
December 2022 in “Genes” CNVs influence hair length in Tianzhu white yaks.
1 citations
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July 2019 in “Case reports in dermatology” A Thai boy was diagnosed with a rare hair disorder causing hair thinning and shedding.
1 citations
,
January 2007 in “中国科学通报:英文版” Women's hair has more sulfur, and black hair has more calcium than white hair.
September 2016 in “Journal of The American Academy of Dermatology” The girl has a genetic hair condition causing thin hair since childhood.
85 citations
,
October 2007 in “International Journal of Dermatology” Curly hair shape is due to uneven growth patterns in the hair follicle.
7 citations
,
January 2019 in “PeerJ” A protein called sFRP4 can slow down hair regrowth.
21 citations
,
June 2009 in “Mammalian genome” A new mutation in the Hr gene causes hair loss in mice, similar to a human hair disorder.
May 2015 in “Journal of The American Academy of Dermatology” A woman with Parry-Romberg syndrome developed new curly hair on one side of her scalp, a condition not previously linked to the syndrome.
27 citations
,
March 2018 in “Journal of Experimental Biology” Wool fibre curvature is due to longer orthocortical cells compared to paracortical cells.
January 2013 in “The Pan African medical journal” Monilethrix causes short, fragile hair with no specific treatment available.
96 citations
,
February 2002 in “Journal of the American Academy of Dermatology” Pseudofolliculitis barbae is a chronic skin condition affecting mainly African American and Hispanic individuals, caused by shaving tightly curled hair, and managed by prevention and treatment but not curable.
June 2026 in “Frontiers in Cell and Developmental Biology” Dermal papilla cells are key to fine wool growth in sheep.
5 citations
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September 2012 in “Journal of Investigative Dermatology” Scientists can mimic hair disorders by altering genes in lab-grown human hair follicles, but these follicles lack some features of natural ones.
Hair can't be as strong as Rapunzel's because it's impractical to scale up due to defects.
Malnourished people have weaker hair that is easier to pluck.
1 citations
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October 2021 in “Journal of Investigative Dermatology”
7 citations
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March 2015 in “British Journal of Dermatology” Applying minoxidil can help improve hair growth in people with hair loss caused by LIPH gene mutations.