Well I have taken years to be convinced - not using shampoo in your hair? Just washing with conditioner? Isn't that a bit grim? Doesnt' it take all flaming day to wash out?
Well I gave it a go and now I am a total convert. My hair looks the best it has ever been, with no extra faffing at all. I often had dodgy hair days when I was shampooing, and the ends and the back would virtually always end up turning into Frizz Hell. Not even a hint of frizz now, seriously not one bit. It's a miracle 
If you're tempted, give it a go. In case anyone is looking like this
, the CG method is using conditioner to wash your hair instead of shampoo and avoiding chemicals like silicones and sulfates which build up on your hair and make it look rotten, especially if your hair is curly and therefore super dry. There are lots of threads about it on MN or just Google 'Curly Girl Method' for more info