Never ever tryed something like this.
This formula has something incredible.. when you put it into your hair, you really feel that something on your scalp is happening! It's kind of a fresh/balsamic/ tingling sensation associated to a strong eucalyptus-ish smell. I personally like it, but I understand that it's something that not everyone would love.
The results it's very good: I'm using Shampoo, Conditioner and Spray of the same brend, and yes, definetely improved the thickness of my hair and give me a good definition that lasts longer than other products!
..the only thing, you may have to give up a little bit of softness with this line.