I read the steps over and over, but I still don't get how the hair is any less wet? Seems to me that once you stick your head underneath the water it's gonna get just as wet regardless of whether you come into the shower already soaked in conditioner or not.
I know that at least with me, deep conditioning on dry hair and then doing the whole processing cap for whatever length of time, that upon jumping in the shower and rinsing my porous hair will get just as wet and dry in no less time than if I had wet, co-washed and rinsed. BTW, I've never co-washed and did another separate conditioner as a rinse-out....makes no sense to me to basically co-wash twice. The only time I condition twice is the moisture conditioning following a protein conditioning treatment.
I must be really slow or missing something because I just don't get it!