43 citations
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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.
43 citations
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September 2001 in “Annals of Neurology” Hair root analysis can effectively detect somatic mosaicism in double cortex syndrome.
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September 2001 in “Scanning” Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.
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April 1996 in “Journal of Investigative Dermatology” 
42 citations
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February 2021 in “Signal Transduction and Targeted Therapy” Hair follicle regeneration possible, more research needed.
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December 2019 in “Steroids” Body hair isn't a good substitute for scalp hair in steroid analysis.
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June 2019 in “Aging” 3,4,5-tri-O-caffeoylquinic acid promotes hair growth by activating the β-catenin pathway.
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December 2018 in “International Journal of Phytocosmetics and Natural Ingredients” Olive and Brazil nut oils improve hair strength, shine, and softness better than silicone.
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March 2018 in “PLOS Biology” Autophagy is important for human hair growth and health.
42 citations
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February 2018 in “International Journal of Molecular Sciences” Minoxidil boosts hair growth by triggering growth factor release from specific stem cells.