learn Caffeine
the stimulant you know and love can be used topically to stimulate hair
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30-35 / 801 resultslearn Valproic acid
an anticonvulsant repurposed for hair loss via histone inhibition
learn Rapamycin
mTOR regulator and immunosuppressant used more recently for anti-aging and hair regrowth
learn Melatonin
hormone commonly taken for sleep aid has some topical benefits for hair