I am a woman who has been battling against really fine, thin hair my whole life. I have tried a lot of volumizing shampoos from the drugstore, all the way up to specialty products in Fekkai's price range. For the price point, I would never buy this shampoo again.
There was NO discernible difference using this product compared to a $3 drugstore variety, and I had to go back to everyday washing. Because I'm really self-conscious about my hair, I like shampoos that give me volume enough that I don't have to wash my hair every day. That may not be an easy feat, but I have definitely found other products with this price point that do the trick.
I'd also heard people complain about the smell, which is something I would get over if the shampoo actually gave remarkable results. Since it doesn't, the dishwasher soap lemon smell adds insult to injury.