7 citations
,
January 2010 in “Pharmacognosy Research” The tobacco leaf extract may help hair grow and could treat hair loss.
4 citations
,
February 2022 in “Journal of Pharmaceutical and Biomedical Analysis” The conclusion is that a new method can measure caffeine and drugs in hair, finding caffeine abusers have 70 times more caffeine than normal, with a proposed cut-off value for abuse.
3 citations
,
October 2009 in “Iranian Journal of Basic Medical Sciences” Buxus wallichiana extract improves hair growth and has antioxidant properties, with oral use more effective than topical.
1 citations
,
August 2023 in “Expert opinion on drug delivery” Cedrol-loaded microneedles effectively promote hair growth.
1 citations
,
October 2017 Suruhan extract made rabbit hair grow longer but didn't increase hair thickness.
February 2026 in “ACS Biomaterials Science & Engineering” Human stem cells can help grow hair for regenerative medicine.
January 2026 in “Biospecies” A 70% black ear mushroom extract hair tonic effectively stops M. furfur growth.
January 2022 in “JURNAL BIOSAINS” A 10% cassava leaf extract tonic grows rabbit hair better than a commercial product.
Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.
99 citations
,
September 2007 in “The American journal of pathology” Chemotherapy damages hair follicles, causing hair loss and other cellular changes.
73 citations
,
March 2010 in “Food and Chemical Toxicology” Zizyphus jujuba essential oil can promote hair growth.
63 citations
,
October 2013 in “Dermatologic Surgery” Platelet-Rich Plasma (PRP) increases the number of new hair follicles and speeds up hair formation.
56 citations
,
August 1994 in “PubMed” Prolactin and melatonin can stimulate hair growth in Cashmere goat hair follicles, but melatonin may reduce follicle viability over time.
45 citations
,
September 2001 in “Journal of Investigative Dermatology” Cyclosporin A promotes hair cell growth and affects protein kinase C levels.
43 citations
,
October 2002 in “International Journal of Cosmetic Science” All three shampoos reduced dandruff and hair loss, but ketoconazole and piroctone olamine also made hair thicker.
42 citations
,
January 2009 in “Colloids and Surfaces B: Biointerfaces” A certain surfactant sticks to human hair, making it change from water-repelling to water-attracting, which could help in hair conditioning.
39 citations
,
July 2016 in “Biomedicine & Pharmacotherapy” Cedrol from Platycladus orientalis leaves may promote hair growth effectively, especially in female mice.
39 citations
,
July 2007 in “Archives of Pharmacal Research” A tripeptide-copper complex may help hair grow by increasing cell growth and decreasing cell death.
36 citations
,
March 2007 in “Journal of Chromatography B” Hair analysis can detect testosterone in horses after drug administration.
32 citations
,
May 2018 in “Cell Cycle” Melatonin helps Cashmere goats grow more hair by affecting certain genes and cell pathways.
31 citations
,
January 2019 in “Journal of Cutaneous Medicine and Surgery” Platelet-Rich Plasma (PRP) therapy can promote hair growth and improve facial aesthetics, including reducing acne scars and facial burns, and it works best with three initial monthly injections.
26 citations
,
October 2007 in “Experimental Dermatology” L-Carnitine-L-tartrate may help hair grow and prevent hair loss.
23 citations
,
January 2020 in “Frontiers in Pharmacology” Dihydrotestosterone affects hair growth by changing the Wnt/β-catenin pathway, with low levels helping and high levels hindering growth.
23 citations
,
August 2019 in “Proceedings of the National Academy of Sciences of the United States of America” Pollution exposure speeds up hair damage.
23 citations
,
October 2006 in “Journal of Dermatological Science” Ethosomal minoxidil improves hair growth by penetrating deeper into skin and shortening hair cycle.
20 citations
,
December 2013 in “PubMed” Quercetin boosts melanin production in mouse hair follicles.
19 citations
,
January 2010 in “International Journal of Ayurveda Research” Tectona grandis Linn. seeds extract improved hair growth in mice better than minoxidil.
17 citations
,
April 1990 in “Environmental Research” Methylmercury accumulates in mouse hair during growth, then decreases when growth stops.
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.
15 citations
,
February 2019 in “Journal of clinical medicine” Atorvastatin reversed memory problems caused by cancer drug trastuzumab and improved its cancer-fighting abilities without causing hair loss.