August 2025 in “Journal of Applied Pharmaceutical Research” F4 and F6 hair gels showed promise for improving hair care but need more testing.
January 2023 in “Revista CPAQV - Centro de Pesquisas Avançadas em Qualidade de Vida” COVID-19 can cause intense hair loss in women, usually resolving in 1 to 4 months.
16 citations
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October 2019 in “Biological & Pharmaceutical Bulletin” Houttuynia cordata extract may help hair grow by improving cell survival and increasing cell growth.
20 citations
,
January 2014 in “Journal of Cosmetics, Dermatological Sciences and Applications” Using adipose derived stem cells and growth factors in hair transplants may improve healing and hair growth.
January 2008 in “대한미용학회지” UV exposure severely damages hair, making it rough and weak.
October 2025 in “OPAL (Open@LaTrobe) (La Trobe University)” Quercetin boosts hair follicle stem cell growth and survival in cashmere goats.
January 2004 in “Hair transplant forum international” Cell therapy could potentially treat hair loss, but we need lab tests to check if it can create hair follicles.
July 2024 in “Journal of Nanobiotechnology” Mouse cell exosomes help hair regrowth and wound healing by activating a specific signaling pathway.
224 citations
,
March 2006 in “Seminars in Cutaneous Medicine and Surgery” The document concludes that understanding hair follicle biology can lead to better hair loss treatments.
May 2007 in “Proceedings of the National Academy of Sciences of the United States of America” Alexander the Great's engineers built a causeway using a natural sand bridge, some tiger moths avoid bats by mimicking toxic relatives' sounds, early metabolism and RNA enzymes support the ancient RNA world theory, and vitamin D is crucial for hair growth and its absence can cause baldness.
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
7 citations
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May 2021 in “Applied sciences” Proteins like BSA and keratin can effectively style hair and protect it, offering eco-friendly alternatives to chemical products.
March 2023 in “JIIS (Jurnal Ilmiah Ibnu Sina): ilmu farmasi dan kesehatan” The best biotin hair tonic formula has 20% span 80, 9.47% tween 80, and 5% PEG 400.
56 citations
,
December 1990 in “Differentiation” Growth factors can either promote or inhibit hair follicle cell growth and collagen breakdown.
4 citations
,
January 2018 in “Advances in Experimental Medicine and Biology” The document concludes that hair follicles have a complex environment and our understanding of it is growing, but there are limitations when applying animal study findings to humans.
January 1999 in “Proceedings of the British Society of Animal Science” Biotin deficiency may harm hair follicle health and growth in Angora goats.
January 2022 in “Journal of St. Marianna University” Substances from human hair cells can affect hair loss-related genes, potentially leading to new treatments for baldness.
January 2021 in “Zenodo (CERN European Organization for Nuclear Research)” Natural remedies like essential oils are preferred for safe and beneficial hair growth support.
July 2012 in “Ubaya Repository (University of Surabaya)” The gel and tonic were not stable.
32 citations
,
July 2012 in “Stem Cells Translational Medicine” Vitamin D3 can help improve hair growth by enhancing the function of specific skin cells and could be useful in hair regeneration treatments.
175 citations
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January 1995 in “Birkhäuser Basel eBooks” Human hair growth and structure are influenced by keratin proteins, genes, melanin, and lipids.
January 2023 in “Minds at UW (University of Wisconsin)” More research is needed to understand how shampoo chemicals affect hair strength and structure.
40 citations
,
February 1994 in “Journal of Investigative Dermatology”
January 2025 in “MEDS Public Health and Preventive Medicine” Spermidine supplements can help extend the hair growth phase and may be useful for treating hair loss.
27 citations
,
January 2015 in “International Journal of Trichology” The supplement helps improve hair growth and reduce hair shedding.
2 citations
,
July 2020 in “Electromagnetic Biology and Medicine” Low-frequency electromagnetic fields help regenerate hair follicles using a mix of skin cells.
Hair growth is maintained by specific cell signals.
5 citations
,
March 2017 in “Biomedical and Pharmacology Journal” Certain growth factors significantly affect hair loss in women with telogen effluvium.
Microneedling with capillary therapy slightly improved hair growth.