I wish this was one of those "a little goes a long way," but it isn't. I have been using this shampoo for a few weeks. Currently it is summer and it is when my hair goes into its frizz glory thanks to the humidity. I have to say that this shampoo has done a decent job of dealing with the frizz. My hair is handling the frizz well.
For background, my hair is very oily and I wash it every other day regardless. If I have exercised, then it is definitely getting washed regardless of the day. I like that this shampoo does not leave my hair too oily.
The fragrance is very mild. VERY. It smells ok but it is barely there. Try to press your just-washed-hair to your nose and inhale...you get a nice hint of a scent that is barely there.
I have very fine hair, so volume is something non-existent for me. But, my hair is even more limp after using this shampoo. Not even twisting it up whilst wet to get some curls into it will yield results.
I have to use the same amount of shampoo as your leading brand (Suave, Treseme, etc) to get the same amount of a proper wash. This is a small bottle. It will not last long.