It has worked for me!
I am a former hair dresser, and I used it before i got sick, just to test it... I had to STOP usingit because I already had so much to begin with I was starting to look like Roseanne Roseanna Danna with straight hair! You're supposed to shed a certain amount everyday... I wasn't losing any!
So, then after I got sick and was losing all of my hair I started using it again... I don't know if it helped GROW my hair, but it definitely slowed the loss of my hair!
One thing however, you SHOULD use both the shampoo and the scalp therapy... they don't work as well seperately... You don't need the WHOLE line if you can't afford it, but those two basics are essential...
Also, if you do choose to use the rest of the line they do work really well... When I first started using it after I got sick I got the whole line...
One more thing, (I know, I know) I would make sure that you have a leave on conditioner as well (Not theirs... it's kind of crappy) because the Nioxin WILL dry out your hair... And then, after your hair isn't as thin, only use it every other washing and use a moisturizing shampoo and condidtioner in between!