Whether your hair 'self cleans' is beside the point. The claims about if you don't wash your hair for 3 months you won't need shampoo are definatly true. One of my best mates is a prime example of this, he never uses shampoo, just rinses with water, but conditions it about once per week, and his hair is REALLY nice. Back when he used to shampoo it it didn't look as nice, and at one point I thought it was looking thin, but right now I'd have to say hes got some of the healthiest looking hair I've seen.