I have very fine thin hair that's also curly. Curly hair products rarely work for me because they're geared to thick hair, so I wasn't expecting much. Also, I only had the shampoo from the sample box and usually shampoo is just shampoo and the conditioner is what makes a difference.
So I tried this out. First I noticed the smell, which is minty, kinda like a toothpaste. That was weird, not unpleasant, but strange. The texture is a little thinner than most of the premium brands I've tried, but it lathered okay without using a whole lot. After I rinsed it left a slightly sticky texture that made my hair a little harder to detangle, which was worrisome but not too bad for me because my hair isn't that long. (If tangles are a major problem for you, don't use this product.)
Then I did my usual heat-protectant/blow dry routine and was really happy with the results. My hair is shiny, soft, and with a noticeable increase in volume. There was a minor increase in frizzies, but nothing not easily fixable with a dab of serum.