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.
5 citations
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June 2017 in “Journal of the European Academy of Dermatology and Venereology” The study found no significant difference in stress hormone levels between people with alopecia areata and healthy individuals, suggesting that the disease is not caused by an overactive stress response system.
29 citations
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January 2015 in “Experimental Dermatology” Injecting alpha-melanocyte-stimulating hormone in mice improved skin healing and reduced scarring.
14 citations
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September 2013 in “Journal of dermatological science” Hairless protein reduces Msx2 gene activity, affecting hair follicle development.
66 citations
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October 1999 in “Annals of the New York Academy of Sciences” The Skin POMC System affects hair growth and skin responses to stress.