I never understood the whole porosity thing, but I have thin, fine hair that loves protein and KCCC. Depending on the day, my hair is 2B/3A curls and waves. I've used KCCC for five years and always have an extra tub on hand so I never run out.

I can't use anything with polyquats because they make my hair look greasy and stringy.
Loose botticelli curls and waves
No silicones/no sulfates since March 2008