12 citations
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October 2018 in “International Journal of Cosmetic Science” Palmitoyl tetrapeptide-20 may help reduce hair greying and increase melanin production.
46 citations
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April 2014 in “PLOS ONE” Gray hair may be caused by lower antioxidant activity in hair cells.
56 citations
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April 2011 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle cells age faster and lose pigment due to less catalase, causing hair to turn gray.
14 citations
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October 2020 in “Scientific reports” Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.
26 citations
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June 2016 in “Pediatric Dermatology” Premature hair graying in young Turkish adults is more likely if they have stress, a family history of graying, drink alcohol, have chronic diseases, are older, or are taller.