Keep in mind that brotzu is no hair doctor. He got into this field of science by chance and he mentioned that a lot when he talked about the lotion. So there is a chance, that his patients really regrew hair but they did not fully turn into dermal hair. I got such hair aswell with minoxidil and finasteride and first i was excited about this results and hoped they will grow thicker and longer but unfortunately they never growed more than some thin, short black hair. So my only concerns about this lotion is, that it wont turn this thin hairs to thick hairs.
From the patent written on late 2015 which intellectual property was then acquired by FIDI, at the end pf the document when it's presenting the results of the mixed trial:
" (...)
On day 45: in group 1, fuzz has grown markedly stronger and takes the colour and consistency of natural hair. In group 2, as expected, all the patients have stopped losing hair, but only some of them report a certain degree of regrowth, fuzz is very weak and not completely coloured yet. Group 3 reports disappearance of split ends. Group 4 reports arrested hair loss in all the subjects and, in some of them, presence of weak fuzz. Group 5 does not report any variation;
On day 90: in group 1 all the patients report total disappearance of hair reduction areas that have been replaced by robust and shiny hair. In group 2 hair reduction is still visible, even if areas are all covered with thick fuzz. Group 3 confirms a general hair improvement. Groups 4 and 5 do not record variations from the previous evaluation;
(...) "
Link:
https://www.google.com/patents/WO2015170247A1?cl=en
Also, from the BelliCapelli interview:
" Domande 1, 2 e 3. La lozione agisce molto bene quando comincia a manifestarsi l’alopecia, in
persone al di sotto dei 30 anni si hanno degli ottimi risultati con
stop totale della caduta e ricrescita dei capelli ed i capelli miniaturizzati o addirittura vellus/invisibili riprendono un aspetto normale. Logicamente il trattamento comincia a dare chiari risultati dopo circa 30 giorni e deve essere prolungato per molti mesi. "