I got several of this shampoo samples from the Banhnhofstrasse shop in Zürich. I was positively surprised by it. It claims a voluminous effect, and I did see nice moderate volume after using it. Already after one use I could see my hair with more volume. I must say, I have rather heavy hair, so if you have really fine hair, go easy on it the first time until you find your ideal dose and time.
Would I buy it after using this sample? Not really, nothing to do with the product, I am just not into volume in my hair.