Since Jan1 or so, I have been using nizoral 3x a week, and thickening shampoos on the other days. Sometimes I have mixed the nizoral with the thickening shampoos. I have nizoral from United Pharmacies.
That being said, last week my wife said my hair looked dry. I started using conditioner for the first time in like four years. I was worried it would look crappy, but actually it looks really good. I use an amount similar to like a Tic-Tac, like a pushpin head... know what I mean? I leave it in for five minutes and then rinse.
I cannot skip washing my hair, it looks bad.