December 1990 in “PubMed” Topical 17 alpha-propylmesterolone increases hair cell growth in androgenetic alopecia.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
12 citations
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June 2009 in “Journal of Cosmetic Dermatology” Loose Anagen Hair syndrome occurs in dark-skinned children and often improves on its own.
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
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August 1994 in “Journal of Cutaneous Pathology” Hair loss happens due to faster cell growth and fewer cells in affected follicles.
25 citations
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October 1975 in “Journal of Cutaneous Pathology” Hair growth in alopecia areata is hindered due to impaired cell activity in the surrounding tissue.
13 citations
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August 2007 in “Journal of Investigative Dermatology” Mouse hair can regrow in a special lab setup without serum.
8 citations
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July 2007 in “International Journal of Dermatology” Using 5% topical minoxidil improved and normalized the hair growth in a girl with short anagen hair naevus.
4 citations
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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.
Loose anagen syndrome causes easy hair shedding in children, often resolving on its own.
109 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.
28 citations
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January 2007 in “Dermatology” Chemotherapy can cause rapid, extensive hair loss, with patterns varying between individuals.
22 citations
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July 1990 in “Acta Dermato Venereologica” High levels of testosterone and dihydrotestosterone inhibit hair cell growth, while high levels of estradiol promote it.
7 citations
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June 1967 in “Journal of Investigative Dermatology” Plucking hairs in a certain way can result in intact hair roots, not related to baldness.
3 citations
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January 2005 in “Biological & Pharmaceutical Bulletin” The peptide GPIGS helps hair cells grow and speeds up hair regrowth in mice.
December 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” New cells join the hair's dermal papilla during the growth phase, possibly affecting hair thickness.
February 2010 in “Journal of The American Academy of Dermatology” Mimicking growth factors in a topical solution can prolong hair growth phase and reduce hair loss without side effects.
130 citations
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December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle melanocytes die during hair regression.
6 citations
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November 2013 in “International Journal of Radiation Biology” Gamma-rays exposure during the resting phase of hair growth can damage hair regeneration and color in mice.
March 2024 in “Tissue and cell/Tissue & cell” Telomerase-positive cells are mainly in the bulb matrix and outer root sheath of hair follicles.
November 2013 in “Institutional Repositories DataBase (IRDB)” Gamma-ray exposure during hair rest phase harms hair growth and color in mice.
19 citations
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February 1998 in “Cellular Immunology” Hair growth phase in mice weakens certain immune responses.
19 citations
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November 2001 in “Journal of Investigative Dermatology Symposium Proceedings” Human hair follicles can regenerate and recover after severe injury by going through a brief abnormal resting phase before growing again.
3 citations
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April 2016 in “Food Science and Biotechnology” Oriental melon leaf extract may help hair grow and keep it in the growing phase longer.
July 2024 in “Journal of Investigative Dermatology” Ashwagandha nanoparticles help hair grow by increasing a growth factor.
April 2017 in “Journal of Investigative Dermatology” Scientists created a tiny, 3D model of a hair follicle that grows and acts like a real one.
19 citations
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April 2015 in “International Journal of Molecular Sciences” The research identified genes and pathways important for sheep wool growth and shedding.
14 citations
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October 2020 in “Scientific reports” Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.
September 2021 in “CRC Press eBooks” Erosive pustular dermatosis of the scalp causes painful, scarring skin lesions on the scalp, mainly in elderly people with sun-damaged skin.