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September 2005 in “Proceedings of the National Academy of Sciences of the United States of America” The HR protein helps hair grow by blocking a hair growth inhibitor, aiding in hair follicle regeneration.
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January 2010 in “Biomedical research” Low oxygen conditions increase the hair-growing effects of substances from fat-derived stem cells by boosting growth factor release.
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September 2003 in “Journal of Ethnopharmacology” Hibiscus rosa-sinensis leaf extract helps hair grow longer and faster.
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December 2005 in “Experimental Dermatology” Stress can stop hair growth in mice, and treatments can reverse this effect.
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June 2005 in “Journal of Investigative Dermatology” All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.
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March 2010 in “Food and Chemical Toxicology” Zizyphus jujuba essential oil can promote hair growth.
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March 2019 in “Experimental Dermatology” Exosomes from human skin cells can stimulate hair growth and could potentially be used for treating hair loss.
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