I have really thick long hair and only wash it once a week anyway (mines the type of hair that doesnt go greasy it just gets drier and drier) I dont use product either apart from oil on my ends so I dont get build up. I've been intrigued by the whole no shampoo thing for a while (for anyone not familiar some people are saying that shampoo completely strips hair of nataural oils therefore making your scalp produce more oil and making you sort of dependant on shampoo) I've been washing my hair with conditioner only for about 10 weeks and my hair is in the best shape ever