Histogen is bullshit.
Micro wounding seems to work pretty well in combination with minox and other growth stimulants. Cassiopea is probably bunk too.
Follicum is still preclinical I think. Results aren't good anyway. I have no patience for shiseido.
I don't know haircell but sounds like shit.
Bayer's/Hope's prolactin inhibitor seems to be a cure candidate.
There's also another AR inhibitor. Not sure why this one is supposedly different but it supposedly is. Don't remember the name. I think it was a publicly traded company.