Herbnlife royal rinse shampoo. The consistency is literally like water and it's not great at lathering either. It took me a few tries to learn how to use it without wasting a bunch, I mean the first time I used it I used up a third of the bottle. Now I only use a small amount, maybe even less than regular shampoo. But anyway, despite the consistency and later, I LOVVEEE this stuff! It is my HG shampoo (low-poo actually), it cleans well and leaves my hair full of body, but at the same time, it moisturized, detangler, and leaves my hair ridiculously soft.