It all depends on your hair. I still cleanse almost daily because I do several hours of martial arts after work. I don't normally use sulfate shampoo, although I do use one on occasion. I normally rotate between sulfate-free shampoos, cleansing conditioners and straight co-washing. You can try a dry shampoo to touch up oily roots between shampoos if you want to try going a day or more between washing.

3a/f/iii
Modified CG since 11/5/11
CLEANSE: VO5 Vanilla Mint Tea Clarifying, DevaCare No-Poo, CHS Treatment Shampoo
RO: DevaCare One Condition, SS Caitlin's Conditioner, Mop Top Daily Conditioner
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier and Strong Hold Mousse, Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel