Sublingual minoxidil increases hair thickness in men with hair loss.
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.
53 citations,
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.
24 citations,
September 2019 in “Journal of The American Academy of Dermatology” Low-dose oral minoxidil improved or stabilized hair loss in some patients, but higher doses may be needed for significant effects.