My hairdresser offered me this product for testing and I have exceptionally listened to her, because I otherwise would not really spend "a lot of money" for shampoo. Therefore one must bear in mind that I'm only 29, yet already have less hair than a good 80% of my friends. So I ventured this trial and was not disappointed. As announced in the product description, you can tell actually already after 2 or 3 times wash a change, but not a hair growth - This is in most cases only after 3-4 weeks.
My hair is now again become a little denser, more shine again and have become much more supple. Therefore, I would put it all to my heart, when time is money about to test this product. If it has no effect recently, it has been tried, after all - That was my attitude and as I said, I do not regret this.