Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.
63 citations
,
October 2013 in “Dermatologic Surgery” Platelet-Rich Plasma (PRP) increases the number of new hair follicles and speeds up hair formation.
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.
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.
15 citations
,
January 2009 in “Journal of chemical and pharmaceutical research” Herbal hair oil with 7.5% amla, hibiscus, brahmi, and methi promotes hair growth as effectively as minoxidil.
14 citations
,
February 2021 in “International Journal of Pharmaceutics” Deer antler velvet serum helps hair grow and is safe for skin.
13 citations
,
July 2015 in “Archives of dermatological research” N1-methylspermidine helps hair growth and reduces inflammation in hair follicles.
11 citations
,
April 2020 in “Life sciences” Pantothenic acid helps mink hair follicles grow by affecting certain cell signals.
11 citations
,
February 2020 in “Journal of Biomaterials Science Polymer Edition” The new GelMet hydrogel can effectively support skin cell growth for tissue engineering.
11 citations
,
May 2016 in “Naunyn-Schmiedeberg's Archives of Pharmacology” A substance called 15-deoxy prostaglandin J2 can cause hair follicle cells to die, which might explain how prostaglandin D2 can lead to hair loss.
10 citations
,
October 2019 in “Iranian Biomedical Journal” Simvastatin helps hair follicle stem cells turn into skin cells.
9 citations
,
August 2020 in “Ecological indicators” Laser ablation ICP-MS is effective for tracking trace elements in polar bear hair over time.
9 citations
,
December 2018 in “Journal of Analytical Toxicology” Ethyl glucuronide levels in hair can change when exposed to artificial sunlight, depending on hair color and thickness.
9 citations
,
April 2025 in “Psychoneuroendocrinology” The occipital region is best for measuring cortisol and cortisone, while the posterior vertex is better for OEA, SEA, and PEA.
8 citations
,
January 2020 in “International Journal of Trichology” Silymarin improves hair follicle health better than vitamin C by boosting cell growth and reducing oxidative stress.
8 citations
,
July 2010 in “Aesthetic Plastic Surgery” Adding more glutathione to the preservation solution doesn't reduce oxidative stress in hair transplants.
8 citations
,
January 1989 in “PubMed” Minoxidil did not affect hair growth in newborn mice.
7 citations
,
December 2017 in “Anais da Academia Brasileira de Ciências” 6-Gingerol from ginger may slow down hair growth by affecting certain enzymes and growth factors.