I have fine, thin hair and need a good thickening volumizing shampoo, help?

try matrix amplify shampoo and conditioner. Just make sure you use both together, because a few years ago when I used it, you had to use them both, other wise it made you hair brittle. But it works great when used together.

Try Burt's Bees Very Volumizing Pomegranate and Soy Shampoo and Condtioner Set.

fructis style by garnier get the shampoo and the volumizer spray it is in a lime green bottle thankz to it i am not a flathead anyore