There are several things I enjoy about Malibu C Color Wellness Shampoo. The nine ounce bottle lasts for quite some time. Since the product is quite thick, I did not need a lot per use and I have hair that goes way past my shoulders. Other shampoos I've used in the past are "watery" and doesn't leave my hair feeling clean. The best thing about Color Wellness Shampoo? It leaves the hair feeling super clean! Thanks for the great shampoo!