I ordered this several months ago and it sat in the shower as I thought it was the wrong shampoo. It sat the 30 days so I couldn't send it back. I ran out of my shampoo, so I had to try it. Wow! Am I glad I did! I have used it ever since, got my husband to try it and we just purchased it again. For us, that's how we rate something. Would we buy it again? Yes, yes, yes! My hair has never looked so good! Thank you, Dr. Groot. BTW....I use the conditioner also!