I have no idea what no poo is... but I make my own shampoo.
I wash my hair every 2-3 days
using a peri bottle with a squirt nozzle I put some baking soda in the bottom of the container, then I fill the bottle with warm water and add lavender oil, tea tree oil, and lately I've also been adding peppermint oil. I like to mix and match essential oils to create different scents.
then I put the cap on and shake it up until baking soda is dissolved and then I get in the shower and squirt the mixture all over my head from root to tip. then I let it sit on my hair for 10-30 minutes. no scrubbing necessary, the longer it sits the better. when I put peppermint oil in the shampoo it makes my scalp all tingly, like a cooling sensation. it feels amazing and it cures any itching. then I rinse in as cold of water as I can stand.