August 2023 in “Journal of Student Research” Human hair keratin mixed with rubber slightly improves its strength and biodegradability.
1 citations
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June 2016 in “Yāftah/hā-yi nuvīn dar ̒ulūm-i zīstī” Sheep testis extract significantly improves wound healing and hair growth in rats.
January 1972 in “NBER Chapters” Melatonin may protect skin from radiation, but its effects on aging and hair growth are unclear.
34 citations
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December 2015 in “Neuroscience & Biobehavioral Reviews” Some hormone-related drugs may protect brain cells in Parkinson's disease differently in men and women.
23 citations
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March 1988 in “Biochemical Pharmacology” Minoxidil stops cells from making prostacyclin, which may help with hair growth. More research is needed.