25 citations
,
January 2014 in “Annals of Dermatology” Sfrp2 increases during hair follicle catagen phase and slows keratinocyte growth.
3 citations
,
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” CBD can either promote or inhibit hair growth depending on the concentration used.
October 2023 in “Scientific reports” Dexamethasone affects hair growth by altering levels of proteins that either promote or inhibit hair follicle growth.
The treatment was ineffective in humans.
58 citations
,
December 1992 in “British Journal of Dermatology” Rat hair follicles grow longer in vitro, but certain factors can inhibit this growth.
22 citations
,
July 1990 in “Acta Dermato Venereologica” High levels of testosterone and dihydrotestosterone inhibit hair cell growth, while high levels of estradiol promote it.
15 citations
,
July 2019 in “Journal of Investigative Dermatology” CBD can either reduce inflammation and not affect hair growth at low levels or inhibit hair growth at high levels.
68 citations
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May 2018 in “PLOS Biology” Cyclosporine A may help treat hair loss by blocking a protein that inhibits hair growth.
53 citations
,
March 2014 in “Growth Hormone & IGF Research” IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.
7 citations
,
March 2012 in “Journal of Investigative Dermatology” Some thymic peptides can increase human hair growth, while others may inhibit it.
1 citations
,
February 2021 in “Scholars international journal of anatomy and physiology” Different forms of FGF5 either promote or inhibit hair growth.
March 2024 in “Chinese Chemical Letters” Tiny glowing gold particles can stop hair growth by blocking a specific cell signal.
January 2014 in “Elsevier eBooks” The study concluded that genetic mutations affect human hair diseases and identified key genes and pathways involved in hair growth and cycling.
1 citations
,
September 2020 in “Pediatric Dermatology” Two teenage boys lost hair after taking a drug for growth, which was not a known side effect for kids.
57 citations
,
August 2006 in “Journal of the American Academy of Dermatology” Gefitinib can cause hair loss without scarring.
32 citations
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April 2011 in “Journal of the American Academy of Dermatology” Erlotinib may cause scarring hair loss.
3 citations
,
February 2019 in “Journal of Cosmetic Dermatology” The effects of estrogen on human scalp hair growth are unclear and need more research.
Low doses of certain Chinese herbs can promote hair growth, while high doses may inhibit it.
9 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Sex hormones and antiandrogens can either stimulate or inhibit human hair follicle cell growth depending on the dose.
April 2024 in “Journal of ethnopharmacology” Ellagic acid may help regrow hair and prevent hair loss by activating a specific cell growth pathway.
9 citations
,
July 2014 in “Experimental Dermatology” PTHRP agonists can stimulate hair growth, especially in damaged follicles, while antagonists may initially increase growth but ultimately inhibit it.
May 2022 in “Frontiers in Cell and Developmental Biology” miR-29a-5p prevents the formation of early hair structures by targeting a gene important for hair growth and is regulated by a complex network involving lncRNA627.1.
76 citations
,
March 2005 in “Cancer Research” Doxorubicin can block blood vessels from hair follicles, reducing skin tumor growth.
13 citations
,
February 2023 in “Aging” A substance from hair follicle stem cells helps heal skin wounds in diabetic mice by promoting cell growth and preventing cell death.
June 2025 in “Phytomedicine” The formula may improve hair growth and health by boosting blood flow and reducing cell stress.
Calcium and hydrogen ions help root hair growth, while aluminum inhibits it.
6 citations
,
January 2013 in “Chemical & pharmaceutical bulletin/Chemical and pharmaceutical bulletin” A new compound shows promise as a topical treatment for hair loss.
1 citations
,
January 1978 in “PubMed” Certain chemical changes to cortisol and progesterone can increase or decrease their ability to inhibit hair growth.
January 1981 in “The Journal of Toxicological Sciences” Hydrocortisone 17-butyrate 21-propionate ointment caused reversible side effects like skin issues, weight gain, and organ changes in dogs.
5 citations
,
April 1984 in “Archives of Dermatology” Porphyria cutanea tarda causes skin issues due to an enzyme deficiency.