I have decided to refrigerate my KCCC since it is taking me a long time to get through the 16 oz. tub. Once I noticed the scent diminishing, I realized I probably should have been refrigerating it all along. (I have had it since late March -- and I put it in the fridge about mid-June.)

I had read previously about KCCC starting to smell "sour" after a while. It is a natural product and the preservatives in natural products tend to be less effective. I think a lot of curlies go through their KCCC tubs faster than I do, so it is not a concern for everyone.
Dry climate
2C/3A, fine texture, high porosity, medium-low density

For me, desert climate+porous hair+CG=inconsistent results!