I have been using the both the vanilla and chocolate protein powders along with the collagen powder for a few months now and have really seen a difference in my hair, my skin and nails. My hair is shinier, my skin glows so much and I am constantly needing a manicure to keep my nails from becoming daggers, haha! I mix one of the the protein powders in my morning coffee everyday and it adds an amazing creaminess to it. And if you brew vanilla or chocolate flavored coffee to go with the powders.... OMG!!! It's like drinking a frothy shake without the sugar or calories!!!! AMAZING!!!!!