Sublingual minoxidil increases hair thickness in men with hair loss.
July 2025 in “The Journal of Dermatology” 5% topical minoxidil may help reduce hair loss and increase hair growth in telogen effluvium.
Botulinum toxin shows promise for treating scalp sweating but not for hair growth.
January 2022 in “Journal of Cosmetics, Dermatological Sciences and Applications” The serum increased hair density and was well-tolerated, but didn't affect hair thickness or shedding.
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August 2019 in “Journal of The American Academy of Dermatology” Oral minoxidil and topical minoxidil 5% both effectively improve female-pattern hair loss with safe side effects.