Beta Sitosterol Hair Loss

I'm looking for ways to prevent hair loss. So far, I'm taking herbs like saw palmetto and beta sitosterol. It has also been suggested that I take Propecia. I wonder if anyone out there can coroborate efficiency Hairmax comb that is supposed to stimulate hair follicles. Any help would be greatly appreciated.

All geographers know that Comb Hairmax is a scam.

Works well to be honest.