I've returned to using cones in moderation and I use a very mild shampoo which is specifically for colored hair, since I dye my hair and most important: I dilute the shampoo like ShubhoR does (earlier in this thread).

The poo contains sulfates but it is a gentle, moisturizing shampoo and diluting it makes it even gentler. I've tried Lo Poo and I just don't like the results as well; my scalp feels greasy afterward. Sometimes I will use Deva NoPoo and skip washing altogether and that's fine too, but I usually just use the shampoo for dyed hair.

You really need to experiment to make the decision about what works best for your hair. Have fun!
2/c Coarse hair med. density.
Highly porous. Color over grey.
I love all the Curl Junkie products. Still experimenting with gels and curl creams. Still hoping for 2nd day hair....
Every day is a gift