January 2000 in “Acta Academiae Medicine Militaris Tertiae” Epidermal growth factor boosts growth of hair follicle cells.
4 citations
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January 2014 in “PubMed” Hair growth is controlled by cycles influenced by hormones and various signals.
January 2025 in “BMC Pediatrics” Iranian girls in Isfahan typically start puberty around age 10, with menarche at 12.
January 2021 in “Dermatology Research and Practice” The study aims to understand the skin and hair characteristics of mothers and their babies, and how these may affect newborns' skin health and mothers' postpartum hair loss.
4 citations
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November 2004 in “Clinical and Experimental Dermatology” Hair length and thickness are related, with thickness peaking at about a quarter of the hair's maximum length.
53 citations
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September 2007 in “Annals of the New York Academy of Sciences” Thymosin beta 4 helps hair grow by boosting stem cell activity.
August 2021 in “Journal of the American Academy of Dermatology”
64 citations
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March 2005 in “Journal of Investigative Dermatology” Brain-Derived Neurotrophic Factor (BDNF) slows down hair growth and promotes hair follicle regression.
21 citations
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January 2018 in “The Korean Journal of Physiology and Pharmacology” Modified stem cells from umbilical cord blood can make hair grow faster.
5 citations
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January 1985 in “Annals of Nutrition and Metabolism” Methionine intake changes tooth germ development in newborn rats.
March 1956 in “Institutional Repositories DataBase (IRDB)”
September 2017 in “Journal of Investigative Dermatology” Aging causes sweat glands to shrink, leading to skin issues, and blue light can help hair grow.
136 citations
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June 2006 in “Journal of Dermatological Science” PDGF isoforms can promote and sustain hair growth.
August 2015 in “Han'gug dongmul jawon gwahag hoeji/Han-guk dongmul jawon gwahak hoeji/Journal of animal science and technology” TRα and CRABPII genes change their activity levels during goat fetal skin development.
15 citations
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July 1984 in “Nutrition Research” Selenium increased in hair but not in blood after taking supplements.
April 2021 in “Pediatric Practice and Research” Early diagnosis and treatment of hair and scalp diseases in children can improve their growth and mental health.
February 2024 in “Animals” Hair loss peaks in spring and regrowth in late summer, with pregnant females losing the most hair.
10 citations
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September 2016 in “Animal genetics” Researchers identified key genes and proteins linked to wool growth in sheep.
41 citations
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October 2017 in “International Journal of Women's Dermatology” Most pregnant women experience skin darkening and hair changes, with these effects usually going away after giving birth.
November 2023 in “Animals” Feeding goats more during the non-growing period increases cashmere yield and length.
7 citations
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May 1979 in “Medical & biological engineering & computing” The trichometer accurately measures hair growth and is easy to use.
7 citations
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September 2014 in “European Journal of Dermatology” Thicker hair grows faster; hair loss patients have slower growth.
16 citations
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January 1998 in “Dermatology” Androgens may worsen a natural hair resting phase, possibly leading to hair loss.
7 citations
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April 1999 in “Dermatologic Clinics” High-quality photos help track hair growth progress in androgenetic alopecia patients.
EGF and EGFR are essential for goat fetal skin development.
19 citations
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August 2013 in “Facial Plastic Surgery Clinics of North America” Children's hairlines change shape as they grow, with women often developing a widow's peak and men's hairlines becoming more convex and possibly balding at the temples, influenced by genetics and hormones.
26 citations
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March 1981 in “Clinical Endocrinology” Oestrogen does not affect adrenal androgen levels in children and adolescents.
December 2025 in “Journal of 108 - Clinical Medicine and Phamarcy” B blood type has the highest growth factors and cytokines in umbilical cord blood-derived PRP.
6 citations
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May 1993 in “Archives of Disease in Childhood” Children's hair loss can be caused by many factors, including autoimmune diseases, emotional stress, genetics, and infections, with treatment and prognosis varying.
13 citations
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January 2019 in “Endocrine journal” Dihydrotestosterone treatment can help penis growth in boys with 5α-reductase deficiency but doesn't fully normalize size after puberty.