Dry shampoo is a new concept to me, and I have just recently started looking into the "less is more" concept for shampooing your hair, and I've been very interested to try dry shampoo. Fortunately, I received this sample in my first birch box. Being unfamiliar with the product, and only going by what other people have said about dry shampoo in general, I thought this did a great job. I used it on my 2nd day hair. After brushing my hair after the 2 minutes, there wasn't any powder left in my brown hair. It also really absorbed the oil in my 2nd day hair as well, which I definitely appreciated. I didn't notice any extra volume added, but overall I thought this product did exactly what it was supposed to do. The only reason I won't purchase it, is because I want to try out some other brands of dry shampoo too before I make a full-size purchase.