22 citations
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July 2011 in “EFSA journal” There is not enough evidence to support health claims about soy isoflavones.
March 1994 in “Proceedings of the British Society of Animal Production” Angora goats produce more hair faster than Cashmere goats.
5 citations
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June 2020 in “Therapeutic drug monitoring” Hair sample weight is a better measure for cortisol levels in hair than hair protein concentration.
June 2023 in “Biochimica and biophysica acta. Molecular and cell biology of lipids” Impaired ABCA5 activity disrupts cholesterol balance in hair follicle cells, affecting hair growth.
6 citations
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October 1989 in “PubMed” Optimized conditions and specific treatments enhance the growth of hair cells from C3H mice.
Biotin boosts wool growth and follicle health in sheep.
22 citations
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August 2015 in “PloS one” Keratin from hair binds well to gold and BMP-2, useful for bone repair.
8 citations
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September 2016 in “Asian journal of beauty & cosmetology” Dendropanax morbifera leaf extract could be good for hair growth and cosmetic products because of its antioxidant properties and growth factor effects.
January 2017 in “Qucosa (Saxon State and University Library Dresden)” Plasma protein binding significantly affects glucocorticosteroid concentration in blood, saliva, and hair.
7 citations
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July 1981 in “Clinical and Experimental Dermatology” The normalized androgen ratio can help manage conditions with excess androgen activity in women.
2 citations
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January 1973 in “ACTA HISTOCHEMICA ET CYTOCHEMICA” Brown skin in guinea pigs has more ascorbic acid and related enzymes, black skin uses ascorbic acid well, and white skin has the most protein.
2 citations
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November 1992 in “Journal of dermatology” Hair cells grown in a lab showed specific hair proteins.
June 2025 in “Materials Today Bio” A silk fibroin hydrogel boosts wound healing and hair growth by increasing collagen and hair follicles.
36 citations
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February 2017 in “BMC Complementary and Alternative Medicine” Geranium sibiricum extract helps hair grow and is more effective than minoxidil but can be toxic in high concentrations.
2 citations
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July 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Autophagy changes the protein makeup of hair.
6 citations
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November 2010 in “Histochemistry and cell biology” The proteins transthyretin and megalin are more present in the growth phase of hair, suggesting they might affect hair health and growth.
January 2006 in “Linchuang pifuke zazhi” Stem cell factor and certain proteins help melanocytes from hair follicles move and attach better, aiding vitiligo repigmentation.
7 citations
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June 2021 in “Amino acids” Human hair protein modifications could potentially indicate heart disease risk.
November 2024 in “Applied Sciences” Placenta products might help with hair loss, but more research is needed.
11 citations
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August 2006 in “Cell Biology International” Endothelin-1 helps amelanotic melanocytes stick and move better on certain proteins.
14 citations
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June 2018 in “Frontiers in pharmacology” Green tea compound EGCG helps mink hair follicles grow by affecting certain cell growth pathways.
June 2025 in “Frontiers in Bioengineering and Biotechnology” Recombinant collagen with nicotinamide boosts hair growth and health.
1 citations
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December 2021 in “American Journal of Obstetrics and Gynecology” Hair cortisol levels peak in the third trimester and decline postpartum.
54 citations
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May 1994 in “Veterinary Pathology” PTHrP is higher in certain dog tumors and may act as a local growth factor.
15 citations
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July 1998 in “PubMed” Fentanyl accumulates differently in hair from internal use compared to external exposure.
Mealworm protein helps fat cell development and may aid in metabolic health and hair growth.
18 citations
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December 2010 in “Journal of analytical atomic spectrometry” A new method accurately measures lead levels in hair to assess exposure.
16 citations
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October 2015 in “Photochemistry and photobiology” Reducing copper (II) ion levels in hair can decrease hair damage.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
7 citations
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January 2010 in “Pharmacognosy Research” The tobacco leaf extract may help hair grow and could treat hair loss.