I used to clarify my hair every 3 weeks or so when I was using predominantly cone containing products but since including more natural/organic products and less commercial products, I only clarify about every 5-6 weeks now.
I love it this way because clarifying poos really dry out my hair. I do however like the effect of Elucence and CON Clarifying Poos on my hair. They do not dry out my hair as much as my ORS Aloe poo. Even my Mizani Puriphyl Poo is gentler than ORS Aloe Poo.