Low-poo = sulfate free shampoo
No-poo = 1. Completely shampoo free method (ex baking soda/acv, straight conditioner-only cleansing, etc) or 2. No-Poo as in the DevaCurl cleansing conditioner (sometimes used more broadly to describe cleansing conditioners).
Low-poos will be labeled as sulfate-free shampoo. Cleansing conditioners are very specifically labeled as cleansing conditioners.

Modified CG since 11/5/11
CLEANSE: CJ Daily Fix, DevaCare No-Poo, CHS Treatment Shampoo
RO: SS Caitlin's Conditioner, CJ Beauticurls Strengthening
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier,Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel