research Sublingual Minoxidil Increases Fibre Diameter in Male Androgenetic Alopecia. - A proxy for Reversal of Hair Follicle Miniaturization.
In this randomized, controlled trial, the researchers observed that sub-lingual minoxidil at doses of 1.35 mg and 4.05 mg, but not 0.45 mg, significantly increased hair fibre diameter in men with male androgenetic alopecia over 24 weeks, suggesting a dose-dependent reversal of follicle miniaturization.

