September 2022 in “KnE medicine” Argan oil in hair tonic increases hair growth and weight in mice, with the best results at 3% concentration.
9 citations
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August 2005 in “Experimental Dermatology” Modified pep7, named EPM peptide, effectively promotes hair growth at low concentrations and works well with minoxidil.
4 citations
,
October 2017 in “International Journal of Applied Pharmaceutics” Licorice extract hair tonics are effective and safe for hair growth, except for mild eye irritation at the lowest concentration.
2 citations
,
November 2021 in “International Journal of Applied Pharmaceutics” The phytosome lotion made from Mangkokan leaf extract was more effective for hair growth than 2% minoxidil, especially at 30% concentration.
December 2021 in “Ad-Dawaa' Journal of Pharmaceutical Sciences” Green tea and celery leaf extracts in hair tonic promoted hair growth in guinea pigs, with the best results at specific concentrations.
May 2021 in “Journal of the Endocrine Society” Adolescents with PCOS have higher levels of certain androgens, which are linked to hair growth but don't help diagnose PCOS better than testosterone levels.
February 2007 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Taking 1mg of finasteride daily for hair loss can lower PSA levels by 40-50%, so to keep PSA effective as a cancer screening tool, the PSA value should be doubled during treatment.
April 2012 in “Journal of IMAB” Men with male pattern baldness don't necessarily have high levels of Dehydroepyandrosterone-sulfate, and there's no link between its levels and the severity of hair loss.
12 citations
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July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Certain sex hormones and antiandrogens can either slow down or speed up the growth of human hair follicle cells depending on their concentration.
15 citations
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November 2020 in “International Journal of Molecular Sciences” Multi-walled carbon nanotubes can enhance root hair growth in certain plants by affecting nitric oxide and ethylene pathways, but only at specific concentrations.
11 citations
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October 2020 in “General and comparative endocrinology” Male C57BL/6 mice show age-related fluctuations in certain hormones and their ratios in both blood and hair.
8 citations
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January 2021 in “Bulletin of Experimental Biology and Medicine” ATP and IL-10 levels in hair follicles relate to follicle length and hair growth, with differences in alopecia patients.
54 citations
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February 1986 in “Archives of Dermatology” Higher minoxidil concentration (5%) works better for severe hair loss, with most patients seeing regrowth in 48-60 weeks.
11 citations
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January 2017 in “Skin Appendage Disorders” Use lower concentrations of triamcinolone acetonide to reduce steroid-induced scalp atrophy.
January 2025 in “International Journal of Endocrinology” A 5% concentration of Dorema aucheri extract significantly improves diabetic wound healing.
22 citations
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May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
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.
16 citations
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February 1986 in “Clinica Chimica Acta” Zinc deficiency is linked to respiratory infections in children.
33 citations
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April 2015 in “Current Opinion in Endocrinology, Diabetes and Obesity” 5α reductase inhibitors treat hair loss but may cause sexual side effects and risks.
22 citations
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November 2010 in “Toxicological & Environmental Chemistry Reviews” Smokers and people with dyed hair have higher levels of certain metals in their hair.
19 citations
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September 1999 in “Talanta” New method measures minoxidil concentration faster, more accurately, and automatically.
Finasteride improves hair but may reduce sperm quality at higher doses.
October 2022 in “Portuguese journal of dermatology and venereology” The best concentration of triamcinolone acetonide for treating alopecia areata is still unclear.
7 citations
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January 2012 California Ground Squirrel hair can indicate environmental health by showing element accumulation.
296 citations
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October 2018 in “General and Comparative Endocrinology” Hair cortisol is a reliable way to measure long-term stress in animals.
January 2026 in “Western Journal of Nursing Research” Hair cortisol levels don't reliably indicate chronic stress in people with multiple sclerosis.
Topical latanoprost acid at 0.05% concentration improved hair growth in women with androgenetic alopecia.
June 2025 in “Pharmaceutics” Ethosomes with 30% ethanol effectively deliver dutasteride to hair follicles for treating hair loss.
August 2023 in “Jurnal Pharmacia Mandala Waluya” Albizia saponaria bark extract at 20% concentration promotes hair growth in rabbits.
January 2005 in “Pharmaceutical Journal of Chinese People's Liberation Army” Ginseng extract can enhance hair growth at certain concentrations.