I worked in a salon in Germany where we used Kerastase way back in the day �. I used it on my own hair and loved it. I didn�t even know it existed in America till a few years ago. I ordered the Bain Satin Riche and used it for the first time today. Before that I had used the Bain Satin 1 a few times. It�s just as good as I remember. Creamy lather, rinses easily and I don�t need to use conditioner after this shampoo. That honestly almost never happens with my butt length hair. A little goes a very long way, you don�t a lot. I used a quarter sized amount and shampooed twice because I hadn�t washed in a few days and my hair tends to get greasy. Smells pleasant too. I know it�s pricey but it�s worth every penny. Those who doubt this is the real deal because it�s on Amazon�.. it is!