Those who had positive results from nioxin hair treatments, how long did it take to see hair growth results?

question explains it all! im using nioxin scalp treatment 3, thankyou!
Those who had positive results from nioxin hair treatments, how long did it take to see hair growth results?
I work in a salon and one of my co-works uses it. She was not thinning dramatically, but she used it to help thicken her hair. I wash her hair every few days, and I could tell with in a month that her hair felt thicker. A good styling aid for thin hair is Sexy Concepts Blow it up gel. It works great!!!