Bumble and Bumble Hair Powders

Has anyone here used these? Can you co-wash it out or do you need a harsh shampoo to get it out? Did it work well? Please let me know your opinion. Thanks!
I love Jessicurl HCC, Jessicurl Too Shea, KCKT, KCCC, CK and HESMU...but it took a LOT of trial error to get to these products that consistently work for ME.