All I can tell you is my dad, and my younger brother have experienced hair loss, I seem to have gotten away with it, I have been using nioxin for a decade. For those of you that initially experience increased hair loss, this is beacause the shampoo dissolves pore clogging sebum - many times it is only this pore clogging sebum that is holding in what is essentially a dead hair. One the pore is clear new hair may grow through. I notice when using the scalp therapy that i have more new hair bristles coming through my scalp. Using it for a short time, even less than 6 months, wont do much for you.
