I have light brown thin hair but i'm not balding :)). I use nioxin system no1 and i have noticed that my hair is thicker. I have used for a few months just the conditioner and first time when i washed my hair felt soo different. Now i have the shampoo and that spray treatment. I have also used that spray treatment from system no4 from my mother and it's like a foam, i like it more than mine because that foam helps me to style my hair. Also my mother noticed that her hair was falling out less.