I used this product along with the shampoo, then used the spray after. I definitely noticed more volume after using all three of the products together. My hair is usually flat, and very fine. The volume seemed to last for a while too, instead of just being noticeable for an hour or two after. The one problem I did notice was that my fine hair which can get knots easily, and tangle, definitely felt tangled soon after. Very hard to run my fingers through without getting stuck. Quite possible that using a little more of the conditioner would easily solve that problem.