I used nioxin for a few weeks and didnt notice anything at all....

Believe it or not, my hair felt like it was even thinner up there. I havent used it for a while. I have acne on my back and I would let the shampoo and shit run down my back or whatever in the shower and it didnt help me out at all. So, I dont know if it is worth it... maybe i should give it another chance.