Azelaic acid and vitamin B6 together may improve hair growth.
10 citations
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September 2018 in “Regenerative Medicine” New hair can grow from large wounds in mice, but less so as they age, involving reprogramming of skin cells and specific molecular pathways.
October 2021 in “QJM: An International Journal of Medicine” PRP injections may help treat hair loss.
3 citations
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December 2015 in “Asian journal of dermatology” Natural plant extracts with sweet flag can significantly reduce hair loss and increase hair density and thickness in people with alopecia.
57 citations
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November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
August 2018 in “Journal of The American Academy of Dermatology” Aging significantly affects the hair and scalp of nonbalding Caucasian women, with changes that differ from male pattern baldness.
January 2015 in “Springer eBooks” Fat-derived stem cells and their secretions show promise for treating skin aging and hair loss.
January 2022 in “Tissue & Cell” Using both platelet-rich plasma and minoxidil together gives the best results for hair growth in male rats with hair loss.
3 citations
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January 2014 in “Ophthalmic plastic and reconstructive surgery” Removing part of the eyelid usually doesn't change the number of eyelashes.
April 2016 in “Journal of Investigative Dermatology” Full thickness wounds on Lanyu pigs' skin resulted in abnormal skin structure and function due to changes in molecular expression patterns.
31 citations
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February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
3 citations
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June 2012 in “Korean Journal of Human Ecology” The supplement reduced hair loss and increased hair thickness safely.
November 2025 in “Cosmetics” Centella asiatica with growth factors improves hair and scalp health.
24 citations
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June 2018 in “PubMed” Serenoa repens extract helps regrow hair and repair hair loss by activating certain cell growth pathways.
22 citations
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January 2014 in “Biological & Pharmaceutical Bulletin” Ginsenoside F2 may help prevent hair loss and promote hair growth better than finasteride.
21 citations
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July 2014 in “British Journal of Dermatology” Hair thickness matters more than density for baldness in Japanese men over 25.
17 citations
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February 2018 in “Journal of Cosmetic and Laser Therapy” The QR 678 hair growth treatment was safe and effective for hair regrowth in men and women.
1 citations
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November 2023 in “Journal of Ayurveda and Integrative Medicine” Ashwagandha serum improves hair health and quality of life in people with hair loss.
1 citations
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January 2009 in “The Korean Society of Beauty and Art” Korean Wild Ginseng extract may increase hair thickness and satisfaction among users, but not significantly increase hair count.
August 2025 in “Archives of Dermatological Research” Oral minoxidil is more effective than topical minoxidil for hair growth in men.
April 2023 in “Journal of Investigative Dermatology” Cinchona succirubra extract with caffeine improves hair growth and reduces hair loss.
18 citations
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April 2016 in “Toxicological Research” Lavender oil significantly promotes hair growth in mice.
April 2024 in “Lasers in medical science” Near-infrared LED light improves skin rejuvenation and hair growth better than white LED light.
April 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Disrupting the Tsc2 gene in certain cells leads to thicker skin, larger hair, and changes in hair growth signaling, which can be partly reversed with specific treatment.
October 2023 in “Research Square (Research Square)” Polynucleotide gel injections help reduce hair loss and increase hair thickness in people with pattern hair loss, with few side effects.
3 citations
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September 2016 in “Hair transplant forum international” Southeast and East Asian men typically have straighter hairlines with less recession and lower hair density, which is important to consider in hair restoration surgery.
6 citations
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January 2016 in “Annals of Dermatology” Human hair contains more glycosaminoglycans in children than adults, and these compounds decrease with age, possibly affecting hair thickness.
142 citations
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February 1985 in “Fertility and sterility” Spironolactone reduced hair thickness and some testosterone levels in women with excessive hair growth.
3 citations
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November 2021 in “Clinical, Cosmetic and Investigational Dermatology” Autologous cellular micrografts improve hair density and thickness in the short term for androgenetic alopecia.
January 2022 in “Journal of Cosmetics, Dermatological Sciences and Applications” The serum increased hair density and was well-tolerated, but didn't affect hair thickness or shedding.