Driven by my curiosity, I finally had this product, too. My sister had bought this one along with the conditioner. I tried them several times, and it worked well to me. My hair was getting smoother and didn't fall a lot.
I bought this in Guardian, when there was a 10% promo. Of course it was a good deal for me, because this is going to be way cheaper than keep on using Kerastase *phew*.

The liquid is green, with very low concentration of perfume. I can barely smell any scent from it. Unfortunately, this one (also) makes your scalp dry if you don't use the conditioner, too.

But, one thing I notice is that it helps my hair grow faster. I cut my hair too short accidentally, so it helps me through.