At first I was disheartened that I got sent a shampoo sample when I already have enough, but then I tried this. I had been using a "quality" shampoo from my grocery store (because it was convenient). My hair was frizzy, dull, dead, etc., and I blamed the environment. I finally thought to try a new shampoo so I turned to this sample bottle and BAM-- my hair almost instantly regained a like-new shine! I let my hair air-dry and even though I live in a very humid city, it holds the fresh, shiny look all day. It also has body, which is shocking because I have super fine hair. So so happy. I'm going to have to fork over the cash and buy an actual bottle.